Draw different trophic levels in an ecosystem with a line diagram.
Trophic levels show energy flow, starting with producers and moving to primary, secondary, and tertiary consumers.
Trophic levels represent the feeding position of organisms in an ecosystem. The main trophic levels are:

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.