Which of the following representations shows how one variable changes in response to another variable?

models
line graphs
pie charts
complex systems

How long do watee vapor last in the atmosphere

The model illustrates a process by which a substance is taken up by a cell

The frequency of alleles in a population that is in hardy weinberg equilibrium? a . changes in each successive generation b. is less important than the frequency genotypes c. shows evidence of the process of natural selection d. remains the same over several generations