A population is a group of individuals of the same species living in a specific geographic area.
Population interactions include:
Predation: One organism (predator) kills and eats another (prey).
Competition: Individuals compete for the same resources.
Mutualism: Both species benefit from the relationship.
Parasitism: One species benefits at the expense of another.
Two important characteristics for estimating any population of animals and plants are \(\underline{\hspace{2cm}}\) and \(\underline{\hspace{2cm}}\) of individuals.
Demography is the study of factors that affect \(\underline{\hspace{2cm}}\) and \(\underline{\hspace{2cm}}\) patterns.