AP BIOLOGY

Detailed explanation-1: -Competition is most typically considered the interaction of individuals that vie for a common resource that is in limited supply, but more generally can be defined as the direct or indirect interaction of organisms that leads to a change in fitness when the organisms share the same resource.

Detailed explanation-2: -territory, in ecology, any area defended by an organism or a group of similar organisms for such purposes as mating, nesting, roosting, or feeding.

Detailed explanation-3: -Many animals, including the cats in back gardens, will fight for territory. An example of intraspecific competition over territory would be between lions on the grass plains of Africa whereas interspecific competition would occur when another predator like leopards lived close to the lions.

Detailed explanation-4: -Organisms compete for the resources they need to survive-air, water, food, and space. In areas where these are sufficient, organisms live in comfortable co-existence, and in areas where resources are abundant, the ecosystem boasts high species richness (diversity).