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aev [14]
3 years ago
7

What is natural selection?

Biology
1 answer:
Helen [10]3 years ago
4 0
The answer is a process that selects variation that help survival and that spreads the variation to more offsprings.

The idea is that there is a higher chance of survival if the organisms has certain characteristics and it is more likely to pass on their genes of this characteristic to the next generations.

For example, there's dark colored fish and white fish. In the deep ocean, dark colored fish can camouflage themselves. However, white fish can be seen easily by predators. Therefore, eventually more dark colored fish survives and more offsprings are dark ones.
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A patient has severe acne that has been refractory to treatment. The patient is taking tetracycline and using topical tretinoin
Degger [83]

Answer:

The correct answer is option c. "Tetracycline must be discontinued before beginning the isotretinoin".

Explanation:

Isotretinoin is a medication used to treat cases of severe acne, having dramatic positive effects since the patients start the treatment. However, the use isotretinoin should be monitored by a doctor because it is hard to process and could cause renal side effects. In this case, the patient must discontinue its treatment with tetracycline before start using isotretinoin.

7 0
3 years ago
Can someone please help me I would rlly appreciate it and no links or false answers for free pts!
Yuri [45]

Answer:

3

Explanation:

that will cause wetlands because water can overflow because of rain.

8 0
3 years ago
Which three of the following best describe what would happen if mitosis did not take place?
vaieri [72.5K]

Mitosis refers to the procedure of cell division, in which a cell goes through a carefully mediated nuclear division, which results in the production of two genetically similar daughter cells. The mitosis comprises five active stages, that is, prophase, premetaphase, metaphase, anaphase, and telophase.  

In a single-celled species like an amoeba, it is the process of mitosis by which the cells reproduce. After undergoing through the five stages of mitosis, it is via the procedure called cytokinesis, the single cell dissociates into two similar cells, thus, completing the reproduction.  

During injury, the process of mitosis takes place to substitute the damaged cells. This repair is mainly essential for the blood vessels and skin that safeguards the organs and muscles in the body. Mitosis also assists to substitute the lost blood via a wound.  

Thus, if the process of mitosis would not take place, then the organism would remain a single-cell, asexual reproduction would not take place, and the tissues of the body would not be able to repair themselves.  


4 0
3 years ago
What is the role of cellular respiration in energy flow?
Thepotemich [5.8K]

Answer:

takes substances captured from the external environment (air and carbon sources) and converts them into energy for building more cells and tissues and for carrying out life-sustaining activities. It also generates waste products and water.

Explanation:

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3 years ago
Sean wants to know the effects of seawater on plant growth.<br> What is the dependent variable?
GrogVix [38]
The answer is the plant growth, because the dependent variable is what responds to the independent variable. 
5 0
3 years ago
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