Answer:
The factor that is tested is called the variable.
The variable is also what is changed in an experiment.
Hope this helped! :)
The accurate answer is:
Natural selection is based on Darwin’s observation that individuals most likely to survive and reproduce are those _____.Environment
Answer:
<u><em>The correct option is C) genetic variation</em></u>
Explanation:
Genetic variation can be described as the differences present in the genetic material i.e DNA of organisms present in a population. Genetic diversity allows organisms of a species to better adapt to an environment. A population in which the genetic variability is scarce might become wiped out by a disease or an invading predator.
As the birds show different variations hence the term that best described them is genetic variation.
<span> In order for the living of the species, when they reproduce, they do so in the millions so that a some of the progeny will be bound to survive.</span>
