Squirrels can sense when the weather is getting colder and they respond by gathering and storing food they can use during the colder months when food may not be readily available. in this scenario, the temperature getting colder is the

answer; i believe the answer is (polygenic inheritance;

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.

answerbacterium;