Ecology Quiz Which is an abiotic factor that is necessary to keep a marine community alive?
decomposers
primary consumers
O producers
O sunlight

How do living things obtain phosphorus

What is a population? a. all the members of the same species living in the same ecosystem at the same time b. the number of a species living in the same ecosystem over a period of time c. the total number of organisms living in an ecosystem at a point in time d. all the members of a food web in the same ecosystem

40. invasive species -. (2 points) olive in the area the species have always lived o naturally moved into a new area are brought to a new area by human activities do not affect the ecosystem of an area