In 1859, Charles Darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. He defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".
Answer:
Evolution.
Explanation:
Evolution is the gradual change that occurs in the genetics of an organism. Change in environment of an organisms play an important role in evolution. Evolution leads to the change in the physical structure of an organisms that is compatible to that environment so gradual change occurs in the genetics of the moth having gray wings which helps the moth to hide in the ash.
Answer:
A plant without fertilizers
Explanation:
A control group is a group where no changes are made so that it can be compared to the group that was tested on, or the independent test variables, to see the difference. So, a plant without fertilizers would be the answer.
<em>hope this helps ♥</em>
Facilitated diffusion is how Molecules pass across the membrane through cell membrane channels. It’s different from simple diffusion because Facilitied Diffusion requires a source of ATP and simple diffusion doesn’t require energy
