How does mutation relate to variation

Mutation is the source for new genetic variation: Genetic variation is brought about by random mutation. Without mutation, genetic variation cannot occur. Mutation is a change in the genetic code in DNA and can lead to a change in the protein that is coded for that segment of DNA.

Explanation:

Mutations are changes to an organism's DNA and are an important driver of diversity in populations. Species evolve because of the accumulation of mutations that occur over time. ... This mutation has introduce a new allele into the population that increases genetic variation and may be passed on to the next generation.

Answer and Explanation:

a. Primary producers

Primary producers are organisms that are able to produce their own food, also known as autotrophs. The best example to illustrate this group are plants. They have a major role in the carbon cycle as they transform inorganic molecules from the atmosphere, such as CO2, into organic molecules like carbohydrates.

b. Secondary producers

Secondary producers are organisms that feed on primary producers, that is, they are heterotrophs (and herbivores), which are then consumed by predators. For example, caterpillars or rabbits. When these organisms respirate, they exhale carbon dioxide, which is used by primary producers in the carbon cycle.

c. Decomposers

Decomposers are organisms that consume and break down organic matter such as dead animals, feces, and leaves. For example, fungi and bacteria. Through this process, they release CO2 and methane into the atmosphere, making carbon dioxide available for plants to carry out photosynthesis.