The diagram below represents a graduated cylinder containing water before and after a rock suspended ona string is lowered into it. State the name of the method being used to determine the volume of the rock. *

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