There may be many forms of a single gene. Each such form is called an allele
D, the black squirrels have survived because black has provided them with an advantage in this environment.
A. The sun
Abiotic means fake or not living. Trees, grass, and people are living, also know as biotic. The sun is not living, it’s just a ball of hot gas, which is not living.
We can tell from their structure that fatty acids are a good source of energy because of their large number of carbon-hydrogen and carbon-carbon bonds that they contain. Most fatty acids have straight chain compounds with an even number of carbon.
Some of the physical properties of mineral are color, density, crystalline structure luster, odor and magnetism
