According to evolutionary theory, species that exist today are the result of a
slow, continuous change of living things over time. Why is this considered to
be a theory and not a law?
A. A law is based on mathematical calculations. Evolutionary theory
is a description based on observations.
O B. A law is supported by extensive research. Evolutionary theory is
an educated guess.
O
C. A law describes natural events but does not attempt to explain
them. Evolutionary theory is an explanation of how living things
have changed over time that is well supported by scientific
evidence.
O D. A law has been proved with scientific evidence. Evolutionary
theory may change when new evidence is found that does not
support the theory.
Answer:
It's answer could be A aur B
Explanation:
not sure but I know that this theory is given by dar VIN
A climate zone is an area that is defined by two main factors. What are they?
Temperature and weather
Precipitation and climate
Weather and climate
Temperature and precipitation
Answer:
Temperature and precipitation.
Explanation:
Climate is defined as long-term climate patterns in a location. Looking at average temperature and precipitation through time is the simplest way to characterize the climate.
Temperature and precipitation are the two most significant factors in the climate of a place. Obviously, the annual average area temperature is significant, but the annual temperature range is important as well. Some locations range from the highest to the lowest temperature significantly wider than others. Average precipitation is very essential, but the annual change in precipitation is equally important. Some regions experience approximately the same precipitation year-round. For half of the year, other locations have very low precipitation while the other portion of the year has lots of precipitation.
Answer:
d
Explanation:
:D hope it helps!
on which surfaces was there more friction? how did you reduce the friction on objects?
Answer: Rougher surfaces have more friction between them than smoother surfaces. That's why we put sand on icy sidewalks and roads. You can't slide as far across ice with shoes as you can on the blades of skates (see Figure below). The rougher surface of the soles of the shoes causes more friction and slows you down.
Explanation:
Friction occurs because no surface is perfectly smooth. Rougher surfaces have more friction between them. Heavier objects also have more friction because they press together with greater force.
Hope it helps you if not sorry
define the photosynthesis?
Answer:
PHOTOSYNTHESIS is a process in which green plants and other certain organisms convert water, carbon dioxide and other minerals into energy rich molecules and oxygen using the light energy.
hope it helps
have a nice day
Answer:
Photosynthesis is a process through which plants and other organisms transform light energy into chemical energy, which is then released to power the organism's activities through cellular respiration.
Is it a, b, c or d? Please help
Answer:
a. The hog farmer does not notice the barn smell from the working boots when he wears them on the porch of the house.
Explanation:
The hog farmer does not notice the barn smell from the working boots when he wears them on the porch of the house is the example of sensory adaptations. Sensory adaptation is a decrease in sensitivity to a stimulus after regular exposure to it. So the farmer can't smell his own boots due to regular exposure to the smell so we can say that it is an example of sensory adaptations..
Consider a neuron in which the Cl- concentration inside of the cell is 15 mM and outside of the cell is 140 mM. Once the ions flow and reach an equilibrium, approximately what will be the concentration of Cl- inside of the cell
Answer:
The correct answer is - negative.
Explanation:
Cl- ion is more concentrated outside of the cell, as it is given 140 and therefore it will try to move to the inside of the given cell as inside ion concentration is low.
At last, the diffusive force will be get to equilibrium due to an electrostatic force pulling Cl- ions back out of the cell. At this equilibrium point, Cl- ions will moved towards to the the neuron and cause the membrane potential to be more negative.
someone help.......................................what are the economic importance of bacteria
Answer:
me
Explanation:
bcox help finish come me
Identifica la opción que relaciona correctamente ambas columnas.
1a, 2c, 3d, 4b, 5e
1e, 2d, 3c, 4a, 5b
1c, 2e, 3a, 4d, 5b
1d, 2e, 3a, 4b, 5c
Complete question:
Identifica la opción que relaciona correctamente ambas columnas.
1a, 2c, 3d, 4b, 5e 1e, 2d, 3c, 4a, 5b 1c, 2e, 3a, 4d, 5b 1d, 2e, 3a, 4b, 5cncontrarás las columnas en archivos adjuntos
Answer:
1c, 2e, 3a, 4d, 5bExplanation:
Fenotipo: Parte de la información genética que se manifiesta en el individuo.
Puede definirse como la forma de expresión de uno o mas caracteres por parte del individuo. Muchos factores externos al individuo pueden moldear el fenotipo para hacerlo mas apto al medio. Asimismo el fenotypo y el ambiente actuan en forma conjunta para determinar el destino de los genes en el espacio y en el tiempo.
Cromosoma: Conjunto de ADN con forma de bastón o de X.
Todas las unidades genéticas que llevan información de herencia y que regulan los procesos celulares. Pueden distinguirse claramente durante la división cellar, durante la cual los cromosomas se condensan. La molécula de ADN en eucariotas es lineal y larga, y se asocia a proteinas llamadas histonas y a otras que no son histonas, formando la cromatina. Anted de la division celular la cromatina es laxa, y durante la división se condensa y se define en cromosomas. Cada cromosoma porta diferentes genes.
Alelo: Variante que determina un caracter (dominante or recesivo)
Los alelos son las distintas formas en las que un gen puede expresarse. Son las formas alternativas de un mismo gen. Resultan d la mutación de un gen original. Estas formas codifican para la misma caracteristica, pero exresando un fenotipo distinto al original.
Genotipo: Contiene el paquete completo de información genética
El conjunto de dos o mas alelos que un individuo tiene en un locus particular. Puede ser
HOMOCIGOTA, si el individuo tiene alelos iguales HETEROCIGOTA, si el individuo tiene alelos distintosGen: Información genética específica localizada en el núcleo de la célula. Fragmento de ADN.
Unidad de herencia que es transmitida de padres a hijos, de generación en generación. Estan fisicamente localizados en los cromosomas, por lo que puede definirse como un fragmento de ADN.
An ecosystem contains biotic and abiotic
factors. Which of the following would be
an abiotic factor?
A. a microorganism on an animal
B. fungi growing on a tree
C. nutrients in the soil
Answer:
nutrients in the soil is the correct answer
The correct answer is option (c) nutrients in the soil.
What is biotic and abiotic factors ?
Biotic and abiotic are the two essential factors responsible for shaping the ecosystem.The biotic factors refer to all the living beings present in an ecosystem, and the abiotic factors refer to all the non-living components like physical conditions and chemical agents in an ecosystem. Therefore, both the abiotic and biotic resources affect the survival and reproduction process.
Why other options are incorrect?
Option (a), (b) are incorrect as they are biotic factors.
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Give ONE reason why cell B(white blood cells) may have more mitochondria than cell A(sperm cells)?
Answer:
because cell B has more energy demand that Cell A so it will have more mitochondria
B.Fill in the blanka with the correct word given inside the box.
clay. water. sticky. loam
oxygen. sand. plants. particles
7.________ is made up of particles that are tightly packed together.
Very fine 8._________ of rocks can hold much water and become 9._________
when wet.While 10.________ is a mixture of sand and clay,this contains the right mixture of particles of silt,sand and clay.
Answer:
7=clay
8=loam
9=sticky
10=loam
What statement best explains how the mass of an atom is organized?
Answer:,,,,,,,,,,,
Explanation
Why dont plant cells have microvilli?
Answer: They don’t have microvili because they don’t need it.
Explanation:
Animal cells have this because it increase surface area and helps absorb food and water molecules.
Plant cells do not have microvilli because they do not require the same type of surface area enlargement as animal cells.
Microvilli are small, finger-like projections that extend from the surface of animal cells. They help to increase the surface area of the cell, which is important for functions such as absorption and secretion.
Whereas plant cells have a rigid cell wall that provides structural support and protection. They have evolved unique structures to meet their specific needs, such as chloroplasts for photosynthesis and a cell wall for support and protection.
So, the absence of microvilli in plant cells is not a disadvantage since they do not require the same surface area enlargement as animal cells.
Therefore, the absence of microvilli in plant cells is due to their unique structural and functional needs.
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Betty's metabolism is unusually sluggish. There is MOST likely an abnormality with Betty's _____ gland.
Answer: Betty's metabolism is unusually sluggish. There is MOST likely an abnormality with Betty's thyroid gland.
6. What is the relationship between genes and alleles?
Answer:
A gene is a unit of hereditary information. Except in some viruses, genes are made up of DNA, a complex molecule that codes genetic information for the transmission of inherited traits. Alleles are also genetic sequences, and they too code for the transmission of traits. So, what it is the difference between a gene and an allele? The short answer is that an allele is a variant form of a gene.
Explanation:
Which of the following would have the least impact on primary productivity in the euphoric zone?
Answer:
I think its B. The emissions of hydrogen sulfate along hydrothermal vents
Explanation:
Because the euphotic zone (not euphoric, lol) is the warm upper zone in water that sunlight can reach and lets photosynthesis occur. the Hydro vents are down deep.
what are the waste products of the kidneys
Answer:
your answer is correct. it is option 3
Select the correct answer. Which statement correctly explains the polarity of the water molecule? A. The hydrogen end of the molecule has a partial negative charge and the oxygen end has a partial positive charge. B. The oxygen end of the molecule has a partial negative charge and the hydrogen end has a partial positive charge. C. Both ends of the molecule have a partial negative charge, which attracts the other water molecule towards itself.
Answer:
option B) The oxygen end of the molecule has a partial negative charge and the hydrogen end has a partial positive charge.
Justification:
The electronegativity of an element accounts for its relative ability to attract electrons.
Being oxygen more electronegative than hdyrogen (the electronegativity of oxygen is 3.44 while the electronegativity of the hydrogen is 2.20), the electron density will be displaced toward the oxygen, letting it with a partial negative charge and the hydrogen with a partial positive charge.
Finally, since the charge is not symmetrical distributed around a center of the molecule, the molecule ends being polar.
what are the mechanisms that halophiles typically employ to grow in habitats with high concentrations of salt
Answer:
Synthesis Of Osmoprotectants
Explanation:
One Mechanism Halophiles use to survive in high concentrations of salt is the Synthesis Of Osmoprotectants, which are also known as compatible solutes. These work by balancing the internal osmotic pressure with the external osmotic pressure, making the two solutions isotonic, or close to it.
Which diagram correctly shows how heterozygous alleles are found on homologous chromosomes?
A chromosome is labeled Upper A a.
A chromosome is labeled a a.
2 chromosomes are labeled Upper A and a.
2 chromosomes are labeled a and a.
Answer:
the chromosome are found in the nucleus of a body cell in pair
At the back of the brain is the __________ which is primarily responsible for processing information about light and movement
Answer:
Cerebellum
................
In the electron transport chain, which structure forms a channel in the inner membrane of the mitochondria and adds phosphate to ADP
Answer: ATP synthase
Explanation:
The ATP synthase complex is an enzyme located in the inner membrane of the mitochondrion that catalyzes the synthesis of ATP from ADP, a phosphate group and energy supplied by a proton (H+) flux. This ATP synthesis occurs during cellular respiration, which is a set of biochemical reactions by which certain organic compounds are completely degraded by oxidation to inorganic substances. This process provides usable energy to the cell in the form of ATP.
During cellular respiration, ATP synthesis is termed oxidative phosphorylation and the proton flux takes place between the intermembrane space and the mitochondrial matrix. ATP synthase produces ATP when protons flow through it. The proton flow creates a pH gradient and an electrochemical gradient. This proton gradient is used by ATP synthase to form ATP via oxidative phosphorylation. ATP synthase acts as an ion channel that "returns" protons to the mitochondrial matrix. During this return, the Gibbs free energy produced during the generation of the oxidized forms of electron transporters is released. This energy is utilized for ATP synthesis. It must then be considered that the electron transport chain and oxidative phosphorylation are coupled by the proton gradient.
Which of the following parts of the brain is related to controlling water concentration and Osmosis?
A. Basal Ganglia
B. Thalamus
C. Hypothalamus
D. Pituitary Gland
Answer:
The correct answer is - D.
Explanation:
The pituitary gland is the gland that releases the ADH hormone that helps in reabsorption and regulates the osmoregulation and water concentration in the body. Antidiuretic hormone is an important hormone in water concentration regulation.
Hypothalamus is the part of the brain other than the Pituitary Gland that helps in controlling water concentration and Osmosis by controlling pituitary gland.
The correct answer is - D.Pituitary Gland
Drag the tiles to the boxes to form correct pairs.
Earth's early atmosphere was made of various gases that were unsuitable for life on Earth. Match the following elements with how they ended
up in the current atmosphere.
nitrogen
carbon dioxide and water vapor
helium
released into the atmosphere during volcanic eruptions
formed due to the transformation of ammonia (NH3)
mostly escaped Earth's atmosphere due to it is light mass
Answer:
Nitrogen ---- formed due to the transformation of ammonia (NH3)
carbon dioxide and water vapor ----- released into the atmosphere during volcanic eruptions
helium ------ mostly escaped Earth's atmosphere due to it is light mass.
Explanation:
Nitrogen are formed due to the transformation of ammonia (NH3) due to action of beneficial nitrogen, carbon dioxide and water vapor are released into the atmosphere during volcanic eruptions and helium mostly escaped Earth's atmosphere due to it is light mass. Helium has atomic mass i.e. 2 which is second lowest after hydrogen mass so due to its lighter weight it can't be stay in the atmosphere near to earth.
Answer:
Nitrogen - formed due to the transformation of ammonia (NH3)
carbon dioxide and water vapor - released into the atmosphere during volcanic eruptions
helium - mostly escaped Earth's atmosphere due to it is light mass.
Darwin’s finches evolved on an island. What is the main reason that islands often provide good examples of evolution?
They have many niches.
They have many organisms that live on them.
They allow for automatic biogeographic isolation.
They allow for many variations to exist in species.
Answer: c) They allow for automatic biogeographic isolation.
The main reason that islands often provide good examples of evolution that they allow for automatic biogeographic isolation. The correct option is C.
What is evolution?Transition in the heritable traits of biological communities over time is referred to as evolution.
These traits are gene expressions that are passed down from parent to progeny during reproduction.
They have resulted in significant gains in standard of living, public welfare, wellness, and protection.
They have altered our perceptions of the universe and of ourselves in relationship to the world around us. One of the most fundamental concepts in modern science is biological evolution.
They are well-known for evolving different beaks that are suited to different food types, such as large seeds as well as invertebrates, enabling them to occupy different niches.
Thus, the correct option is C.
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Question 9 of 10
The effect wind has on an airplane can be modeled by using a wind tunnel.
What is one limitation of this model?
A. Changing atmospheric conditions can be modeled by varying the
airflow in the tunnel.
B. The wind tunnel must be run by highly skilled workers.
C. Valuable information about how planes fly is provided by a wind
tunnel.
D. Scientists can test pieces of planes, such as wings.
SUBMIT
Answer:
B. the wind tunnel must be run by highly skilled workers.
correct me po if imma wrong ^-^
6. The title of this text is "Why Do Cave Fish Lose Their Eyes?" Why might the author
have written the title as a question?
A. to encourage readers to answer the question on their own before they read the article
B. to prepare readers for a discussion of possible answers to this question in the article
C. to criticize scientists for not having reached a definite answer about why cave fishes
lose their eyes
D. to praise scientists for the effort they have put into understanding the cause of
blindness in cave fishes
B.to prepare learners for a discussion of a possible answers to this question
Classify the hypotheses about fluids on Earth as falsifiable or non-falsifiable.
Floating in the Great Salt Lake
in Utah is a lot of fun.
The Great Salt Lake is salty due
to a high rate of water evaporation
in the desert climate.
Magma erupting from the mantle
below Earth’s surface is hot and
fluid in nature.
Magma leaks up from the mantle
below Earth’s surface and spreads
out, forming a new ocean floor,
thereby causing land forms above
to move.
Answer:
Magma leaks up from the mantle below Earth's surface and spreads out, forming a new ocean floor, thereby causing land forms above to move;
Falsifiable
The Great Salt Lake is salty due to a high rate of water evaporation in the desert climate;
Falsifiable
Magma erupting from the mantle below Earth's surface is hot and fluid in nature;
Falsifiable
Floating in the Great Salt Lake in Utah is a lot of fun;
Non-Falsifiable
Explanation:
PLATOPlease leave a rate, and thanks! I hope this helps. :)
Anemia is a medical condition in which the affected person lacks enough red blood cells. What two effects will such a condition have on the patient?
The patient will have less hemoglobin in the blood.
The patient will have less immunity against bacteria.
The patient will have a reduced oxygen supply to the cells.
The patient will have a thicker blood composition.
The patient will have increased platelets in the body.
Answer:
very truthful
The patient will have less hemoglobin in the blood.
The patient will have a reduced oxygen supply to the cells.
john attaches a ball to a spring
Answer:
Downwards
Explanation:
Im not sure because there's no choices