Which evidence suggests that several mass extinctions have occurred during earth's history? a. fossils provide information about water level and temperature. b. many fossils demonstrate that organisms have changed over time. c. fossils of the same species have been found on distant continents. d. many fossils of organisms that are no longer living have been discovered.

Which sentences describe the logistic growth model? there are three different phases of the s-shaped curve. at first, growth is exponential because individuals are few and resources are plenty. this growth model occurs in a situation where resources are plenty and individuals are few to consume the resources. population growth decreases as resources become limited. when a population size reaches the carrying capacity of its environment, the population growth slows down or stops completely. the model looks like a j-curve.