True. Gametes, which have 46 chromosomes overall, are haploid human body cells.
A pair of nonhomologous chromosomes and two sets of 22 homologous pairs make up the 46 chromosomes found in human somatic cells. The 2n, as well as diploid, state, is this. One complete pair of chromosomes, or 23 chromosomes, is present in each human gamete. The n, as well as haploid, phase is this. Two complete pair of chromosomes are present in a diploid cell. The majority of human cells are diploid, with 23 chromosomal pairs totaling 46 chromosomes. Every human cell in the body has 23 pairs of these chromosomes, making our diploid number 46 and our 'haploid' number 23.
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________ is the process by which nerve cells are coated with insulation that enhances the speed and efficiency of the information traveling through the nervous system.
Myelination is the process by which nerve cells are coated with insulation that enhances speed and efficiency of the information traveling through nervous system.
What is myelination?Nerve fibers are surrounded by insulating, fatty sheath called myelin, which acts to speed up impulses. Impulse can travel much more quickly than if it had to travel along the entire length of the nerve fiber, by jumping from node to node
Myelination process occurs when substance called myelin, which is made up of fatty lipids and proteins, accumulates around nerve cells. Myelin plays an essential role in health and function of nerve cells, brain and the nervous system.
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[TRUE or FALSE] selecting the range before you enter data saves time because it confines the movement of the active cell to the selected range.
True. By limiting the movement of the active cell to the defined range, choosing the range before entering data saves time.
In comparison to the default, the Percent Style might have fewer or more places following the decimal. A reference based on a relative cell location rather than the usual setting is known as a relative cell reference. You must select the complete destination area before pressing the Paste button when pasting cells into a destination region. You may insert several rows or columns at once without using the keyboard. The move command and copy command both achieve the same result.
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thickened regions of circular muscle that function like valves to control the flow of contents at various points in the GI tract
Sphincters are the thickened areas of circular muscle that act as valves to regulate the flow of contents at different places in the GI tract.
Sphincters are unique circular muscles that may be found throughout the GI system. They operate as valves, regulating the passage of contents between various GI tract areas. Along the digestive system, sphincters may be found in a number of locations, such as the lower esophageal sphincter and the pyloric sphincter. Effective digestion and nutrient absorption are made possible by these muscles, which assist control how food and other substances are moved through the digestive tract.
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Pain that radiates to the right lower quadrant from the umbilical area, nausea and vomiting, and lack of appetite are MOST indicative of:
A. pancreatitis.
B. appendicitis.
C. cholecystitis.
D. gastroenteritis.
The correct answer is option B i.e. Appendicitis.
What do you understand by Appendicitis?The symptoms described are those of appendicitis. A common symptom is pain that radiates from the umbilical area to the right lower quadrant. Appendicitis is also associated with nausea, vomiting, and a loss of appetite. Pancreatitis is characterised by upper abdominal pain that can radiate to the back. Cholecystitis is characterised by pain in the right upper quadrant, whereas gastroenteritis is characterized by diarrhoea, vomiting, and abdominal cramps.
Appendicitis is an inflammation of the appendix, a small, thin, tube-like organ in the lower right side of the abdomen attached to the large intestine. The appendix's exact function is unknown, but it is thought to play a role in immune function.
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Dark moths began to outnumber white moths in cities after the Industrial Revolution. What is the most likely reason for this change? a.Light-colored moths mutated into dark colored moths.
b.Light-colored moths began to die due to overpopulation.
c.Light-colored moths were less favored for survival in the new environment.
d.Light-colored moths began to turn black because of factory pollution.
The most likely explanation for this change is that C) Light-colored moths were less likely to survive in the new environment.
After the Industrial Revolution, dark moths started to outnumber white ones in urban areas.
About Industrial revolution
Due to the invention of the machine, a change called the industrial revolution took place in England in the middle of the 18th century. At first, the necessities of life in England and its surroundings were made by hand or with basic tools.
However, as soon as machines were created, people could produce goods more quickly than society could consume. the knowledge of the industrial revolution Many facets of life were successfully influenced by global changes during the industrial revolution.
It became simpler to produce goods and services, which had previously been difficult, expensive, and time-consuming. In fact, quite a few of them also speed up the process and make it less expensive, effective, and efficient.
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Scientists studying the blind cave-dwelling fish Astyanax mexicanus hypothesized that this fish evolved from a surface-dwelling fish. If this is true, which part of the anatomy of A. mexicanus is most likely to be a vestigial structure?
The eyes, a part of the anatomy of a mexicanus is most likely to be a vestigial structure.
What do you mean by anatomy?
Anatomy is the branch of biology that deals with the structure and organization of living things. It is the study of the physical structure of the body and its parts, including organs, muscles, bones, and tissues.
The eyes of a Mexicanus are most likely vestigial because they do not serve any significant function in the species. Vestigial structures are those that are left over from an ancestor, but are no longer useful in the current species. In the case of the Mexicanus, the eyes may have been beneficial to its ancestor, but they have since been reduced in size and complexity as the species has evolved to no longer require them.
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Why is lactase persistence more prevalent in indigenous populations of humans in northern europe and parts of africa than in other regions of the world?
Answer: Lactase persistence is more prevalent in indigenous populations of humans in northern Europe and parts of Africa than in other regions of the world due to natural selection. In these regions, where dairy farming was a significant part of the local economy and diet, individuals who could digest lactose throughout their lives had a survival advantage over those who couldn't. Over time, the frequency of lactase persistence alleles increased in these populations. This demonstrates how the environment and the pressures it imposes can drive the evolution of traits in a population over time.
Explanation:
water is the trigger for the embryo to begin the enzymatic breakdown of the starchy endosperm. True/False
True: Water is the trigger for the embryo to begin the enzymatic breakdown of the starchy endosperm.
Endosperm is the bulky inner part of a cotyledon, which is the reserved food material for the growth and development of embryo. What happens is that the embryo absorbs water and grows in size. During this development, it utilizes the endosperm. The embryo now gets too big for the seed to occupy in. Thus, it bursts the seed coat and emerges out of the seed shell. The radicle of the embryo is the part which emerges earlier than the plumule.
By providing nutrition, shielding the embryo, and regulating embryo growth by functioning as a mechanical barrier throughout seed development and germination, the endosperm supports embryonic growth in a significant way.
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Why would it be beneficial for an organism to be able to perform both types of reproduction?
It would be beneficial for an organism to be able to perform both types of reproduction, as if the environment is unstable, its chances of living would increase.
What are two types of reproduction?The generation of descendants is reproduction. Asexual reproduction and sexual reproduction are the two main types. An organism that reproduces sexually incorporates the genetic material from both of its parents and is genetically distinct.
Asexual reproduction creates genetically identical kids when one parent copies itself.
Therefore, this genetic diversity will enable more kids to survive and reproduce in unpredictable environments than if the population had the same genetic make-up.
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neo-freudian theories of psychoanalysis such as those of karen horney and erik erikson differ from freud’s em conceptualization in that they are less likely to emphasize what?
Neo-Freudian psychoanalytic theories, such as those of Karen Horney and Erik Erikson, diverge from Freud's em conceptualization in that they place less emphasis on the function of sexual and violent drives in personality development.
While Freud thought that biological instincts drove the human mind, neo-Freudians argued that social and cultural elements played a larger part in moulding our personalities. Horney, for example, felt that our formative experiences with our parents and other key individuals in our life might have a significant influence on our sense of self and interpersonal connections.
Erikson, on the other hand, established a theory of psychosocial development that outlined eight developmental phases that people go through from infancy to old age. Each stage has a unique difficulty that must be overcome in order for proper growth to occur. These difficulties are connected to building connections, developing one's identity, and discovering one's life's purpose and meaning. Erikson felt that these issues were formed by social and cultural elements as well as biological drives.
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without autonomic nervous system input resting heart rate would be approximatelya. 70-80 beats/minb. 50-60 beats/minc. 100-120 beats/mind. 200-220 beats/min
Without autonomic nervous system input, the resting heart rate would be approximately 100-120 beats/min. Option C is correct.
The autonomic nervous system (ANS) is a complex network of nerves and ganglia that controls and regulates many of the body's involuntary functions, such as blood pressure, digestion, and respiratory rate.
The autonomic nervous system plays a critical role in regulating the heart rate by balancing the sympathetic as well as parasympathetic branches. The sympathetic nervous system releases norepinephrine, which increases the heart rate, while the parasympathetic nervous system releases acetylcholine, which slows down the heart rate.
Without this balance, the heart rate would be determined solely by the intrinsic pacemaker cells in the heart, which have a natural firing rate of around 100-120 beats/min.
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Which component of the lymphatic systems consists of unencapsulated aggregates of lymphocytes within organs of the body?LymphLymphatic tissuesLymphatic organsLymphatic vessels
Accumulations of unencapsulated lymphocytes in the lamina of numerous organs that are permanently near to an epithelium, such as the tonsils, gut, respiratory tract, etc.
What is the name of unencapsulated lymphoid tissue?Lymphatic nodules are distinct, unencapsulated bundles of lymphatic cells (follicles). These bundles have boundaries that distinguish them from neighbouring cells. Within the lamina propria, nodules form on the mucous membranes that border the respiratory, reproductive, and urinary tracts.
Do lymph nodes have a protective covering or are they not?The thymus and lymph nodes, which are clearly delineated enclosed organs with distinctly recognisable structures, contain the lymphoid tissues that are the best structured. around the spleen (a soft, purplish organ lying high in the abdomen).
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If at most one electron is removed from any single atom, what percent of the atoms are ionized by this charging process?.
[tex]$$\% X=2.34 * 10^{-14} \%$$[/tex] of the atoms are ionized by this charging process
From the question we are told that:
Mass [tex]$M=2.5 g$[/tex]
Charge [tex]$q=4 * 0 * 10^{-9}$[/tex]
Generally the equation for Total number of Atoms in Penny is mathematically given by
[tex]$$\begin{aligned}& T_a=\frac{\text { Mass }}{\text { atomicweight }} * 1 \text { mole } \\& T_a=\frac{2.5}{63.6} * 6.02 * 10^{23} \\& T_a=2.34 * 10^{27} \text { atoms }\end{aligned}$$[/tex]
Since Number of electrons in a penny is
[tex]$$\begin{aligned}& e=n T_a \\& e=29 * 2.34 * 10^{27} \\& e=6.86 * 10^{23}\end{aligned}$$[/tex]
Therefore
The percentage of the atoms are ionized by this charging process is given as
[tex]\begin{aligned}& \% X=\frac{T_a}{e} \\& \% X=\frac{2.34 * 10^{27}}{6.86 * 10^{23}} \\& \% X=2.34 * 10^{-14 \%}\end{aligned}[/tex]
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Full Question : A 2.5-g copper penny is given a charge of 4.0x10-9 C. If no more than one electron is removed from an atom, what percent of the atoms are ionized by this charging process
Gregor Mendel performed crosses using true-breeding pea plants and observed the traits exhibited by the offspring. He crossed a yellow-seed male plant with a green-seed female plant. He then allowed the offspring (F generation) to self-fertilize, producing offspring (F generation). Based on his results, Mendel concluded that traits can be masked. What evidence best supports Mendel's conclusion?
A. the green color trait was present only in the parent generation
B. the green color trait appeared less pretentious in each successive generation.
C. the green color trait was present in about one quarter of the population of every generation.
D. the green color trait was missing from the F1 generation, but reappeared in the F2 generation.
Answer:
D. the green color trait was missing from the F1 generation, but reappeared in the F2 generation
Explanation:
This supports Mendel's conclusion that traits can be masked. This observation demonstrated the principles of dominant and recessive traits, with the green trait being recessive and masked in the F1 generation by the dominant yellow trait. The reappearance of the green trait in the F2 generation showed that it was not lost but rather masked in the F1 generation.
Which sequence best describes an interaction between the integumentary and excretory systems that helps maintain homeostasis?
Sweating refers to a process that involves a connection between the excretory and integumentary systems and aids in the maintenance of homeostasis.
What is integumentary system?The organ system that comprises the skin, hair, nails, and numerous glands is known as the integumentary system. It protects the body from harm, controls body temperature, and stops water loss by acting as a barrier between the internal organs and the outside world.
a. Sweat glands in the integumentary system produce sweat.
b. Sweat contains water, salts, and urea from the excretory system.
c. Sweat is released through the skin pores, removing excess water, salts, and urea from the body.
d. The excretory system helps regulate electrolyte balance and fluid volume in the body, contributing to overall homeostasis.
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Answer:
J.) Body temperature increases > glands release sweat > body temperature decreases
Explanation:
Sweating is part of both the integumentary and excretory systems.
What is the concentration of solute outside the cell?
The term "hypotonic solution" refers to the solution with a lower solute concentration in the cell.
The three sorts of solutions are as follows:
isotonic, hypotonic hypertonic.If a cell is placed in a solution where the concentration of solutes is more outside than within, then the cell is said to be hypotonic with respect to cell exterior.
A cell is considered to be hypertonic with respect to the cell exterior if it is placed in a solution where the concentration of solutes is lower outside than inside.
The cell is considered to be isotonic with the external solution if the concentration of solutes is the same within and outside the cell.
To reach equilibrium, water always travels over the semipermeable membrane from a low solute concentration to a high solute concentration.
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What part of the body does Nephro refer to?
The term "nephro-" also means "of a kidney; pertaining to the kidneys" and is derived from the Greek word nephros, which means kidney.
The kidneys, which are two bean-shaped organs located behind the abdominal cavity on either side of the spine. The kidneys filter waste and excess fluid from the blood, produce urine, regulate electrolyte balance, and produce hormones that help regulate blood pressure and stimulate red blood cell production. The term "nephro" is frequently used in medical terminology to refer to kidney-related conditions or procedures such as nephritis (kidney inflammation), nephrectomy (surgical removal of a kidney), and nephrology (the branch of medicine that focuses on the kidneys and their diseases).
Each kidney has millions of tiny filtering units called nephrons that filter blood and remove waste products like urea and creatinine.
Infections, kidney stones, and various forms of kidney disease can all have an impact on the kidneys. Chronic kidney disease, in particular, is a serious condition that, if left untreated, can lead to kidney failure. Treatment for kidney conditions may include medication, dietary changes, and, in some cases, dialysis or kidney transplantation, depending on the specific condition and severity.
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The independent variable of this experiment was the presence of macromolecules, the dependent variable was color change. Thus, test tube # ________ was the control group and was used as the comparison group to our tested experimental groups.
Please help^ fill the blank
The independent variable of this experiment was the presence of macromolecules, the dependent variable was color change. Thus, test tube was the control variable and was used as the comparison group to our tested experimental groups.
What are variables?Variables are defined as any characteristics, number or quantity which can be measured . It can also be called as a data item . It is called as variable because they can vary and can have variety of values.
There are three types of variables 1) manipulated variable where in a condition is specified, 2) responding variable which is dependent on manipulated variable 3)controlled variable which do not change
Example of manipulated variables are number of hours spent by a student studying , that of responding variable is result of a student and temperature is an example of controlled variable.
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T/F ovulation occurs near the end of the ovarian cycle.
True. Ovulation typically occurs near the end of the ovarian cycle, approximately 14 days before the start of the next menstrual period.
The release of eggs from the ovaries is known as ovulation. When the ovarian follicles in females break and release the secondary oocyte ovarian cells, this process takes place. During the luteal phase following ovulation, the egg is ready for sperm fertilisation. Additionally, the endometrium, which lines the uterus, thickens to provide room for a fertilised egg. The uterine lining and egg will be lost during menstruation if there is no fertilisation.
The ovaries regularly alternate between the luteal and follicular phases throughout the monthly menstrual cycle, which lasts from menarche to menopause. The uterine lining thickens and blood flow discharges cease as a result of the follicular phase being stimulated by steadily increasing oestrogen levels. A complicated hormonal interplay causes the ovary's follicles to start forming, and after a few days, one or occasionally two of them become dominant, while non-dominant follicles shrivel and die. The dominant follicle releases an egg at about midcycle, roughly 10–12 hours following the rise in luteinizing hormone, often known as the LH surge. This process is known as ovulation.
The oocyte survives after ovulation for 24 hours or fewer without fertilization, while the remaining components of the dominant follicle in the ovary develop into a corpus luteum, a body of egg-like tissue.
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true or false,Based on the β-globin alignment, identify the best hypothesis about how humans are related to monkeys and gibbons.
Choose the most plausible theory explaining how humans are linked to monkeys and gibbons based on the -globin alignment. Compared to gibbons, monkeys are more closely connected to humans.
Do gibbons have a closer resemblance to humans?According to Carbone, other research have estimated that chimpanzees, our closest living relative among apes, share 98 percent of the gibbon's genome with humans. Gibbons are gravely threatened.
What have humans and gibbons in common?Except for their limbs, gibbons resemble humans in terms of size and maintain a similar upright bipedal stance. Keep in mind that the human and gibbon both have rather large braincases compared to their small mandibles and faces.
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explain why the expressions -6(5-k) and 6k -30 are equivalent
which two rings have approximately the same bond angle in their favored conformations?
The two rings that have approximately the same bond angle in their favored conformations are cyclopropane and cyclobutane. (options a and b).
The bond angle in a cycloalkane ring is influenced by the number of carbons in the ring. As the ring size increases, the bond angle tends to approach the tetrahedral angle of 109.5 degrees. Cyclopropane has a bond angle of approximately 60 degrees due to the ring strain, which is very different from the tetrahedral angle. Cyclobutane has a bond angle of approximately 90 degrees, which is also significantly different from the tetrahedral angle.
However, both of these rings have similar bond angles in their favored conformations due to the puckering of the ring. This puckering causes the angle between the two carbons on either side of the puckered carbon to be closer to 90 degrees, resulting in a more tetrahedral shape. Therefore, cyclopropane and cyclobutane have approximately the same bond angle in their favored conformations.
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Complete Question:
Which two rings have approximately the same bond angle in their favored conformations?
a. cyclopropane
b. cyclobutane
c. cyclohexane
d. cyclopentane
e. cycloheptane.
What organizes the spindle in cell division?
The spindle is primarily organised in the search-and-capture paradigm by the poleward separation of centrosomal microtubule organising centres (MTOCs). From centrosomes, spindle microtubules "hunt" for kinetochores; once they bind one, they stabilise and put tension on the chromosomes.
The cytoskeletal structure that forms in eukaryotic cells during cell division to partition sister chromatids into distinct daughter cells is known in cell biology as the "spindle apparatus." It is referred to as the meiotic spindle during meiosis, which produces daughter cells that are genetically similar to the parent cell, and as the mitotic spindle during mitosis, which produces gametes with half as many chromosomes as the parent cell. In addition to chromosomes, the spindle machinery is composed of hundreds of proteins. Microtubules make up the vast majority of the machinery's parts.
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ILL MARK BRAINLIEST PLEASE HELPP
Figure 4 shows an intrusion. An intrusion is something that cuts through layers of rock. This intrusion is magma. Is the intrusion older or younger than the layers of rock?
Mandates the restoration and maintenance of the chemical, physical, and biological integrity of the nation's waters
The Clean Water Act requires that the chemical, physical, and biological integrity of the country's waters be restored and maintained.
What purpose did the Clean Water Act of 1972 serve?A permit was required under the CWA in order to discharge any pollutant from a point source into navigable waters: Discharges are regulated by the National Pollutant Discharge Elimination System (NPDES) permit program run by the EPA. Distinctive conveyances, such pipes or artificial ditches, are known as point sources.
What is the 1948 Clean Water Act?The Federal Water Pollution Control Act of 1948 was the first comprehensive federal policy statement expressing interest in clean water initiatives, and it specifically allocated monies for state and municipal governments to address water pollution issues, including research.
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what is the ultimate source of the electrons that are transferred during the light-dependent reactions of photosynthesis?
The ultimate source of the electrons that are transferred during the light-dependent reactions of photosynthesis is water (H2O). Water is split into oxygen (O2), protons (H+), and electrons (e-) by a process called photolysis or water splitting
explain about water slitting ?
The ultimate source of the electrons that are transferred during the light-dependent reactions of photosynthesis is water (H2O). Water is split into oxygen (O2), protons (H+), and electrons (e-) by a process called photolysis or water splitting, which occurs in the thylakoid membrane of the chloroplasts in plant cells.
The electrons produced by photolysis are then transferred along an electron transport chain to generate ATP and reduce NADP+ to NADPH, which are used in the light-independent reactions of photosynthesis (also known as the Calvin cycle or the dark reactions) to produce glucose and other organic molecules.
Therefore, water is not only a reactant in photosynthesis, but it is also the source of the electrons that drive the light-dependent reactions.
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Now that Ruthie has been infected with the chickenpox virus, what is the first step in the immune response that helps her fight off the virus?
a) the display of antigenic fragments in Class I and II MHC proteins in the plasma membranes of antigen-presenting cells
b) antigen recognition by CD8 T cells and CD4 T cells
c) T cell activation and division to produce both active cytotoxic T cells and memory T cells
d) activation of B cells, which divide to produce memory B cells and plasma cells that secrete antibodies
The immune response that assists her in battling the virus starts with the display of antigenic fragments in Class I and II MHC proteins in the plasma membranes of antigen-presenting cells.
When antibodies form in response to a vaccine, what type of immunity results?Artificial active immunity is the form of immunity that is developed through vaccination or immunization. Natural active immunity is when the body actively produces antibodies against an antigen in response to it.
After vaccination, what kind of immunity develops?By introducing a dead or compromised version of the disease organism by vaccination, one can develop vaccine-induced immunity.
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The tissues that cover external and internal body surfaces are ____.
The tissues that cover external and internal body surfaces are epithelial tissue.
What is epithelial tissue?The epithelium is а type of body tissue thаt forms the covering on аll internаl аnd externаl surfаces of our body, lines body cаvities аnd hollow orgаns аnd is the mаjor tissue in glаnds. Epitheliаl tissue hаs а vаriety of functions depending on where it’s locаted in our body, including protection, secretion аnd аbsorption.
The orgаns in our body аre composed of four bаsic types of tissue, including:
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What is the chain of transmission of infectious pathogens?
The chain of transmission of infectious pathogens can be described by the following steps:
Reservoir: The pathogen needs a reservoir to infect susceptible hosts. This can be a person, animal, infected food, water, or surface.
Portal of exit: The infection must escape the reservoir via respiratory secretions, feces, urine, blood, or other body fluids.
Transmission: Reservoir to a susceptible host. This can happen through direct contact, like kissing, indirect contact, such as touching contaminated surfaces, or airborne droplets, like when an infected person coughs or sneezes.
Portal of entry: The infection must enter the vulnerable host through the mouth, nose, eyes, or skin.
Susceptible host: The pathogen must infect a person with a weaker immune system, a person who has not been vaccinated, or a person who has never been exposed to the virus.
Breaking any of these processes can stop infectious disease transmission.
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1. Based on the passage what is the relationship between chemical energy, motion energy, and heat energy?
2. Based on the passage above draw your biomass pyramid below this time adding arrows to show the flow and relative amounts (%) of energy