You can infer that the birds once had a common ancestor but became separated. Mutations in copying their genes stacked and caused changes in the beaks so the birds could be more well off or better adapted in their new environment.
A long, wet season results in additional earthworms in a robin habitat.
Explanation:
A long, wet season resulting in additional earthworms in a robin habitat will not lead to competition in an ecosystem or area.
Competition between organisms is the struggle for limited resources in the environment that are beneficial to all lives.
- Competition is usually driven by shortages and lack of resources to make life better in the ecosystem.
- When resources becomes depleted and are in limited amount organisms will begin to strive among on another to develop advantages that would make them top out.
- A long, wet season resulting in the introduction of additional earthworms in a robin habitat is not an example of competition.
- The earthworms available is a limiting factor and this has been circumvented by the introduction of more earthworms during the prolonged wet season.
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<span>New combinations of genes may be produced by </span>immigration, mutation and sexual reproduction. These new combinations are also called variations.
