<span>DNA is made of chemical building blocks called nucleotides. These building blocks are made of three parts: a phosphate group, a sugar group and one of four types of nitrogen bases. To form a strand of DNA, nucleotides are linked into chains, with the phosphate and sugar groups alternating.</span>
The correct answer is <span>the contribution an individual makes to the gene pool of the next generation relative to the contribution of another individual.
Each individual in a population has an absolute fitness which is a measure of the successfulness of an individual in reproducing and leaving viable offspring. The relative fitness, on the other hand, is the relative fitness of the individual compared with another individual, usually the one with the highest fitness. </span>
The geological conditions.
Dependent. Density dependent factors is what is being described.
