AP BIOLOGY

Detailed explanation-1: -A population would remain the same size if each pair of adults produced exactly two offspring, and each of those offspring survived to reproduce. If the adults in a population are not replaced by new births, the growth rate will be negative and the population will shrink.

Detailed explanation-2: -Carrying capacity is the maximum size of the population of a species that a certain environment can support for an extended period of time.

Detailed explanation-3: -Why is long-term parental care not associated with having many offspring during a reproductive episode? Parental care is not feasible for organisms having many offspring because they do not have the energy available to take care of offspring.

Detailed explanation-4: -If a population exceeds carrying capacity, the ecosystem may become unsuitable for the species to survive. If the population exceeds the carrying capacity for a long period of time, resources may be completely depleted. Populations may die off if all of the resources are exhausted.