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kobusy [5.1K]
2 years ago
7

Which are characteristics of natural selection?

Biology
1 answer:
Zarrin [17]2 years ago
8 0

Answer:

-There is a variation in traits.

-The environment cannot support unlimited populations of organisms.

there is heredity.

-The trait that allows the organism to have more offspring will become more common in the population of organisms.

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I'll give you a Brainliest for correct answer
Ymorist [56]

Answer:

Nondisjunction causes it

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3 years ago
5. Which of the following is an example of active transport?
Nadusha1986 [10]

Answer:

D (proteins moving ions from low to high concentration across a cell membrane)

Explanation:

Active transport, by definition, is a type of substance transport that requires energy (typically in the form of ATP). Having said that, we can immediately eliminate B (aka water diffusion throughout the cytoplasm of a cell), as diffusion (osmosis in this case) does not require any expenditure/spending of energy. Next, we can cancel A and C because although they do require energy, there is no transport involved. Thus that leaves us with D. D is not only the answer because of the process of elimination but also b/c the ans. choice says that ions are being moved from low to high concentration, which is against the concentration gradient and thus requires energy. Hope you found this helpful! :)

6 0
2 years ago
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In north carolina, demand for fresh water has increased dramatically. one of the main reasons for this is increased water use fo
Oksanka [162]

Agricultural practices relating to irrigation have the tendency to reduce the water level of river basins.

<h3>What are the effects of irrigation agriculture on river basins?</h3>

Irrigation agriculture requires that crops are watered artificially and this requires a water source. Hence, waters in river basins suffer and this leads to a reduction in their levels.

Water quality is impacted by agricultural practices such as the use of agrochemicals and fertilizers. Agrochemicals are washed into water bodies and this impacts biodiversity life in water.

One conservation strategy to reduce the impact of this kind of agricultural practice would be to practice organic farming. A farming practice that is devoid of using agrochemicals or the ones that are not poisonous to biodiversity and are biodegradable.

More on the effects of agrochemicals on waters can be found here: brainly.com/question/16259315

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4 0
2 years ago
Franklin D. Roosevelt used his presidential power to institute the Reorganization Act of 1939 in what way?
Rzqust [24]

Its the second option....................................... :)

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3 years ago
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c. Glucose and ATP are produced in glycolysis and used in fermentation.

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Glycolysis is a cytoplasmic pathway that converts glucose into two three-carbon compounds while producing energy. Phosphorylation traps glucose with the help of the enzyme hexokinase.

Fermentation is a metabolic process that involves the action of enzymes to produce chemical changes in organic substrates. It is narrowly defined in biochemistry as the extraction of energy from carbohydrates in the absence of oxygen. Fermentation is an ancient method of food preservation. The method is still used today to make wine, cheese, sauerkraut, yogurt, and kombucha.

To learn more about glycolysis and fermentation, here

brainly.com/question/2114577

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7 0
10 months ago
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