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xeze [42]
3 years ago
10

Biologists sometimes say that “natural selection depends on the specific environment where a species lives.” What does this stat

ement mean?
Biology
1 answer:
denis23 [38]3 years ago
8 0

Answer: Natural selection is one of the forces of evolution and the enviroment where the species lives is the selection agent. For example, suppose a mosquitoes population in a environment free from insecticides, in this environment there's a high frequency of non-resistant mosquitoes because the environment is not  exerting any pressure on the resistence trait. But when the environment changes and we use a insecticide upon the mosquitoes population, the populations changes because the non-resistant ones die but those resistant survive and beggin to reproduce more effectively. That's natural selection, differences in survival and reproduction between individuals with different phenotypes (traits) and this differences depend of environmental changes.

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the outer planets are mostly formed of lighter elements because these three condense are a ____ temperature
Stolb23 [73]

The outer planets are mostly formed of lighter elements because these three condense are a<u> lower temperature</u>.

<u>Explanation:</u>

The planets based on the location of the sun is divided into two, that is outer planets and inner planets.

The Outer planet which is far from the sun consists of larger quantity of lighter substances such helium, hydrogen, methane which would condense at the lower temperature. And remains gaseous inside the frost line that would exit far away for the sun so the temperature is low and the lighter materials are easier to condense in lower temperature to form terrestrial  rocks.  

7 0
3 years ago
Why is a testcross necessary to determine genotype when an organism shows a dominant trait
soldier1979 [14.2K]
A dominant trait can be shown both when an organism is homozygous dominant AND heterozygous. Two different genotypes give the same visible result so a testcross is needed to be able to accurately say if the organism is homozygous dominant or heterozygous
8 0
3 years ago
What is the meaning of prey
kondaur [170]

Answer: an animal that is hunted and killed by another for food.

Explanation:

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3 years ago
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Amanda [17]
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_________is severe pain and constriction about the heart, usually radiating to the left shoulder and down the left arm and creat
White raven [17]

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