All living things have DNA within their cells. In fact, nearly every cell in a multicellular organism possesses the full set of DNA required for that organism.
Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).
which class question is this?
Answer: Biomes differ in the amount of precipitation they receive, their temperatures, and the life that inhabits each biome. ... Each biome is filled with organisms adapted to live in one of its ecosystems and each biome is determined by temperature and precipitation, accounting for differences between biomes.
Wastes and the remains of dead organisms would pile up and the nutrients within the waste and dead organisms would not be released back into the ecosystem. Producers would not have enough nutrients.
