Tectonic plates often shift position by the force of liquid rock emerging from below the Earth’s surface and then cooling to form hard rock. This most often occurs .

This is the diveristy of ecosystems natural communites and habits it is the variety of ways that species interact with each other and their environment

What would be the result if crossing over did not happen during meiosis in humans? a. there would be less genetic variation in humans. b. parents would be more likely to look like their children. c. the human population could not reproduce. d. children would have more chromosomes.

Which characteristics are typical of a human population in the postindustrial stage?