<span>The need for a polymerase that wouldn't denature at high temperature. Obviously, organisms that live in hot springs and the like will have adapted enzymes that can survive at these temperatures.</span>
Decomposers break down dead animals and plants. They usually benefit producers by releasing nutrients back in the soil.
Excess Nitrates in the water supply
A variation is a reference to the differences or deviations, such as the structure and form, as for crossing over is the exchange of genetic material between the non-sister chromatids of the homologous chromosomes during meiosis.
A. deoxyribose + phosphate group + thymine
