Answer: Microevolution is simply a change in gene frequency within a population. Evolution at this scale can be observed over short periods of time — for example, between one generation and the next, the frequency of a gene for brown coloration in a population of beetles increases. Such a change might come about because natural selection favored the gene, because the population received new immigrants carrying the gene, because of mutation, or because of random genetic drift from one generation to the next.
House sparrows were introduced to North America in 1852. Since that time, the sparrows have evolved different characteristics in different locations. Sparrow populations in the north are larger-bodied than sparrow populations in the south. This divergence in populations is probably at least partly a result of natural selection: larger-bodied birds can often survive lower temperatures than smaller-bodied birds can. Colder weather in the north probably selects for larger-bodied birds.
14.Rule of Splintage
Answer:
A basic rule of splinting is that the joint above and below the broken bone should be immobilized to protect the fracture site. For example, if the lower leg is broken, the splint should immobilize both the ankle and the knee.
How is cancer defined, meaning how
do doctors decide what type of
cancer patients have?
A. by where it ends
B. by where it spreads
C. by where it starts
Underground mining removes minerals from deep in the earth. Miners use blasting to separate the "waste" from the mineral deposit. Which statement best describes an environmental consequence of this process? (3 points)
Underground mining activities often cause noise pollution.
Acid mine drainage kills plants and animals around the mine.
High salinity of wastewater reduces soil fertility and vegetation.
Soil is removed by the force and pressure of the drilling process.
Answer:
Explanation: Acid mine drainage kills plants and animals around the mine is the statement that best describes an environmental consequence of underground mining. Acid mine drainage is a byproduct of the mining process that occurs when water reacts with minerals in the rock, creating acidic and toxic conditions. This can have a significant impact on the local ecosystem, killing plants and animals that live in and around the mine, and contaminating water sources. It is important for mining companies to manage and mitigate the impact of acid mine drainage to minimize its environmental consequences.
Why do scientist hypothesize that earth is about 4.5 billion years old  hypothesize
Answer:
Scientists hypothesize that the Earth is about 4.5 billion years old due to a variety of evidence, including radiometric dating of meteorites and other extraterrestrial objects, as well as radiometric dating of rocks found on Earth. Additionally, the age of Earth is also estimated based on the age of the solar system, which is believed to have formed around the same time. Finally, the age of Earth is also estimated based on the age of the Moon, which is believed to have formed around 4.5 billion years ago.
Answer:
Scientists estimate the age of the Earth to be approximately 4.5 billion years old based on several lines of evidence. This includes radiometric dating of rocks, which uses the decay of isotopes of certain elements to determine the age of the rock. Meteorites, which are believed to have formed at the same time as the solar system, also provide age information. Additionally, the ages of moon rocks brought back by the Apollo missions provide independent confirmation of the Earth's age. Other lines of evidence, such as the ages of the oldest minerals on Earth and the time it took for the Earth's magnetic field to stabilize, also support this age estimate. The convergence of all these lines of evidence leads scientists to conclude that the Earth is about 4.5 billion years old.
Knowing the age of the Earth is important for understanding the evolution of our planet and its place in the solar system. By determining the age of the Earth, scientists can also study the processes that have shaped and changed the Earth over time, such as mountain building, plate tectonics, and the evolution of life. The age of the Earth also has implications for broader scientific questions, such as the origin of the solar system and the evolution of the universe. In addition, understanding the age of the Earth allows scientists to put events in Earth's history, such as mass extinctions and the evolution of life, into a chronological framework. All these reasons make it important for scientists to determine the age of the Earth.
PLEASE HELP
9. Which arrow or arrows indicate a process that cycles carbon from living or nonliving organisms? Describe the process or processes you selected.
10. Which arrow or arrows represent reactions that demonstrate the conservation of mass and energy? Explain your answer.
Answer:
9. In an ecosystem shown, arrow D indicates a process that cycles carbon from living or nonliving organisms. The process is evaporation.
10. All arrows represent the conservation of mass and energy.
Explanation:
Hope it helps:)
Pls tell me if I got it wrong:)
On a coordinate plane, triangle A B C has points (negative 1, negative 1), (negative 2, negative 1) and (negative 2, negative 4). Triangle A prime B prime C prime has points (1, negative 1), (2, negative 1), and (2, negative 4). What is the name of the line of reflection that maps the pre-image to the image? y = x y-axis x-axis x = 1
On a coordinate plane, the triangle A B C has points, and the line of reflection that maps triangle A B C to triangle A' B' C' is the line x = 1 (last option), which is a vertical line that passes through the point (1, -1) and reflects the pre-image over this line to produce the image.
What is the line's reflection?It is a type of transformation in which a pre-image is reflected over a line to produce an image, and each point in the pre-image is mapped to a corresponding point in the image; here, for the triangles ABC, the line of reflection is x = 1.
Hence, on a coordinate plane, the triangle A B C has points, and the line of reflection that maps triangle A B C to triangle A' B' C' is the line x = 1 (last option), which is a vertical line that passes through the point (1, -1) and reflects the pre-image over this line to produce the image.
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Answer:
y-axis on edge
Explanation:
picture below. I tried x = 1 but it was wrong, I actually took a look at the image and the y-axis was in between the 2 triangles.
Based on your knowledge of the effects of climate change, what do you think will happen to our arable soil? How will this affect our food supply?
Soils will be affected by climate change, which will impact soil erosion, organic carbon, nutrients, and alkalinity.
How does climate change affects the food supply?Food quality and access are also impacted by climate change, which can also affect food availability.
For instance, decreasing agricultural output may be a result of expected temperature rises, modifications to precipitation patterns, modifications to extreme weather events, and decreases in water availability. It affects the production and transportation of food.
Hence, this is how climate change affects the food supply.
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Particle formed by chemical bonding of two or more atoms are
Answer:
Molecule
Explanation:
A molecule is the smallest particle of an element or compound that can exist independently.
How should Alexei revise the model so that it shows the directions in which gravity affects the movement of water?
Arrow 1 should be removed.
Arrow 2 should be removed.
Arrow 3 should point the opposite way.
Arrow 4 should point the opposite way.
PLEASE HELP!
Answer:
yes it is arrow 2 should be remover
Explanation:
i sed so
Who observed comets and proved that the planets are NOT in celestial spheres?
*
1 point
Ptolemy
Galileo
Newton
Brahe
Meiosis is a form of which of the following cell divisions?
What are left over pieces of our Solar Systems early formation called?
*
1 point
Planetesimals
Comets
Asteroids
Nuclei
Green apple or red apple ?
Answer:
Red Apple
Explanation:
They r more tasty
Answer:
red apple
Explanation:
they are juicier and sweeter
What is lightning and thunder?
Lightning is a discharge of electricity. A single stroke of lightning can heat the air around it to 30,000°C (54,000°F)! This extreme heating causes the air to expand explosively fast. The expansion creates a shock wave that turns into a booming sound wave, known as thunder.
What are the general principles concerning the effects of teratogens on prenatal development?
The effects of teratogens on prenatal development is susceptibility, development stage, mechanisms, end points, access, and dose response.
What do you mean by teratogens?Teratology is the study of abnormalities of physiological development in organisms during their life span. It is a sub-discipline in medical genetics which focuses on the classification of congenital abnormalities in dysmorphology.
Teratology is the study of birth defects, and its goals are (1) to describe and determine etiology, (2) to explore mechanisms involved in the production of birth defects and (3) to devise means of prevention.
A teratogen is a substance that interferes with normal fetal development and causes congenital disabilities. Drugs, alcohol, chemicals and toxic substances are examples of teratogens.
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You have a 2 gram/mL stock solution of protein. To make 10mL of 10 mg/mL solution, add ______ of stock then add ______ of water to make the final volume ______ mL (HINT: Convert units)
You have a 2 gram/mL stock solution of protein. To make 10 mL of 1 mg/mL solution, add 0.05 mL of stock and 24.95 mL of water for a final volume of 25 mL.
What are measurements?In this case, the new solution is expressed in milligrams per mL (mg/mL) while the stock solution is expressed in grams per mL. Let's only utilize mg/mL for the computations.
By assuming that the amount of protein in the new solution is equal to the amount we would remove from the stock solution, we can obtain an equation.
Therefore, you have a 2 gram/mL stock solution of protein. To make 10 mL of 1 mg/mL solution, add 0.05 mL of stock and 24.95 mL of water for a final volume of 25 mL.
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Mini was helping her mother in the kitchen when she observed that some of the potatoes started to sprout from their notched areas.How does a new potato plant sprout from this potato itself? Name any two plants which can reproduce in the same way
Through vegetative propagation, the potato plant carries out asexual reproduction. The process of creating new plant progeny from the vegetative components of the parent plant.
What is vegetative propagation?Plants can reproduce asexually by vegetative propagation, which takes place in their leaves, roots, and stems.
This may happen as a result of the fragmentation and regeneration of particular vegetative plant components.
Vegetative methods are mostly used to propagate potatoes (cloning). There are nodes or eyeballs in potato tubers where new growth sprouts.
Sprouts are the new stems that are emerging from each eye and are what give life to a new plant.
Examples of vegetative proliferation through leaves include begonia and bryophyllum.
Vegetative propagation is used to grow food crops like cassava, sweet potatoes, sugarcane, pineapple, bananas, onions, etc.
Thus, this way, a new potato plant sprout from this potato itself.
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Question 2 of 10
In a controlled experiment, which group experiences the test?
OA Measurements and observations
B. Instruments and equipment
C. Control group
D. Experimental group
SUB
Answer:
A is the correct answer
Explanation:
I choose A because There will just watch, measure and observe the test.
Predict what will happen when a piece of algae (simple plant) from the ocean is placed in a beaker of fresh water. Be sure to include the appropriate vocabulary while you are explaining your answer including the salt and freshwater environments compared to the algae. (Hypertonic, hypotonic, isotonic).
When an algae from the ocean is placed in fresh water, the water environment around the algae will become hypotonic in comparison to the algae's cytoplasm.
What makes the ocean water hypotonic?The high concentration of salt and other solutes in the ocean water creates a hypertonic environment for the algae, while the low concentration of solutes in the freshwater creates a hypotonic environment.
This change in osmotic pressure will cause water to move into the algae cells, causing the cells to swell. If the water uptake becomes excessive, the cells may burst and the algae may die.
However, if the algae is able to adjust its internal salt concentration, it can survive in freshwater. This process is called osmoregulation.
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Put the steps of our solar system's formation in the order scientists think they happened. 1₁ A cloud of gases and dust collapsed and formed a swirling disk as gravity pulled the matter together. Gravity pulled most of the mass in the disk of gas and dust to the center as the Sun formed. ++ Planets formed regular orbits around the Sun because of gravity and inertia, Planets formed as materials in the swirling disk stuck together and were held together by gravity.
solar system formed about 4.5 billion years ago from a dense cloud of interstellar gas and dust.
How was solar system's formed step by step?The Sun and the planets formed together, 4.6 billion years ago.from a cloud of gas and dust called the solar nebula.A shock wave from a nearby supernova explosion probably initiated the collapse of the solar nebula.The Sun formed in the center, and the planets formed in a thin disk orbiting around it.The planets, in order of their distance outward from the Sun, are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Four planets—Jupiter through Neptune—have ring systems, and all but Mercury and Venus have one or more moons.Our solar system formed about 4.5 billion years ago from a dense cloud of interstellar gas and dust. The cloud collapsed, possibly due to the shockwave of a nearby exploding star, called a supernova. When this dust cloud collapsed, it formed a solar nebula—a spinning, swirling disk of material.To learn more about solar system refers to;
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12. Describe the main advantage of using remote surgery. (1 point)
Answer:
Helps you perform surgery from hundreds of miles away
Explanation:
Main advantage of remote surgery is the ability for a surgeon to perform surgery hundreds of miles away.
For example, suppose the president of US has some serious brain issue that no neurosurgeon in US can fix. But there's a neurosurgeon in France that can fix it but that neurosurgeon refuses to come to US. What happens? In a ideal world, remote surgery would be set up where the surgeon in France performs the surgery from France using a special software/tools that can control a robotic surgeon in the hospital in US to perform the surgery.
Which occurs when the body responds to the environment by maintaining a stable internal environment despite changing external conditions?
spontaneous generation
homeostasis
growth and development
reproduction
Answer:Homeostasis
Explanation: homeostasis maintains balance in the body inside the body, even if there are changing external conditions. Hope this helped =)
How does a thunderstorm break apart and disappear?
Answer: When the downdrafts in the cloud become stronger than the updrafts, the storm starts to weaken. Since warm moist air can no longer rise, cloud droplets can no longer form. The storm dies out with light rain as the cloud disappears from bottom to top. The whole process takes about one hour for an ordinary thunderstorm.
Explanation:
Which action will help preserve the environment for future generations?
A. Clear-cutting an area for urbanization
B. Introducing invasive species to more ecosystems
C. Increasing fishing in declining habitats
D. Passing laws for sustainable development
Then pen in a squid is believed to have come from what:
A evolution: the squid lost its other bones
Bevolution: the squid lost its tail
Csquids do not have pens
B evolution: the squid lost its shell
Answer:A evolution: the squid lost its other bones
Explanation:The pen, a stiff, rod-like structure found in the body of some species of squid, is believed to have evolved from the remnants of a once more extensive skeleton that the animal no longer needed. Over time, as the squid evolved, it lost many of its bones, including those in the tail, leaving only the pen as a remnant of its evolutionary history. This is known as a process of reduction, in which an organism reduces its overall skeletal structure as it adapts to its environment and changes in behavior or anatomy.
Original population
Equal
frequency
of black
and white
alleles
New population increase
Chance event reduces
population size
New population increase
Chance event reduces
population size
Allele frequency
differs
The model shows a demonstration a student prepared using black and white
marbles to show how populations of organisms can change. Which of the following
concepts is best illustrated by this demonstration?
Evolution of a predatory species
Immunity from virulent microorganisms
Genetic drift accompanying natural selection
Environmentally induced genetic mutations
HELP ASAP
Answer:
genetic drift accompanying natural selection (hope it's right and good luck)
Answer:Genetic drift accompanying natural selection
Explanation:
trust
) Express your vission on the role of students to estabblish social peace
Students may have a crucial role in establishing social peace because generally they have thinking associated with noble causes.
What is the role of students in establishing social peace?The role of students in establishing social peace may be important in the sense they can be the force of change on the earth when their voices are heard by politicians.
Therefore, with this data, we can see that the role of students in establishing social peace may be important as long as they are comprised of noble causes such as avoiding climate change.
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Select all the examples of the function of proteins
1 lactase is an enzyme that is responsible for breaking down lactose into unstable sugars within the stomach
2. ATP provides chemical energy for cells
3 keratin makes up hair skin and nails providing them with strength and support
4 estrogen and testosterone are sex hormones produced in the ovaries
5 hemoglobin transports oxygen within the body
"Lactase is an enzyme that is responsible for breaking down lactose into unstable sugars within the stomach, keratin makes up hair skin and nails providing them with strength and support and hemoglobin transports oxygen within the body" are all examples of the function of proteins.
What are proteins?Proteins are substantial biomolecules and macromolecules made up of one or more extended chains of amino acid residues.
Among the many tasks that proteins carry out in living things include catalyzing metabolic processes, replicating DNA, reacting to stimuli, giving cells and organisms structure, and moving molecules from one place to another. The primary way that proteins differ from one another is in the order of their amino acids, which is determined by the nucleotide sequence of their genes and typically causes a protein to fold into a certain 3D structure that controls its activity.
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Can human reproduce without cells
Why or Why not?
please hurry
answer ASAP PLEASE
Humans can't reproduce without cells because the process of fertilization requires the fusion of the sperm and egg cells.
What is Reproduction?This is referred to as the biological process by which new individual organisms which are called offspring are produced from their parents through different techniques.
It usually involves the fusion of the male and female gametes which are composed of cells and contain the required DNA which are passed to the offspring. Scientific studies have made artificial embryos but there has been cases of malformations which is why it isn't feasible.
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Match the following terms with their definition.