Answer:
4.1 Ecologist study within several biological levels of organization, which include organism, population, community, and the ecosystem. In essence, ecologists seek to explain: life processes. interactions, interrelationships, behaviors, and adaptions of organisms.
4.2 • Population size and density: total size is generally expressed as the number of individuals in a population
• Population dispersion or spatial distribution
• Age structure
•Natality (birth rate)
• Mortality (death rate)
4.3 Birth rate, death rate, emigration, and immigration.
Explanation:
Hope it helps y'all <3
