What are the total variety of organisms that live in the biosphere a. species
b. ecosystem
c. biodiversity

What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?

Long term exposure to waves can cause sunburns and skin cancer.

Sarah and john are having a discussion on genetic diversity. sarah believes that it happen over a long period of time. john it happens immediately. who is correct? a. sarah is correct because genetic diversity occurs over a long period of time. b. john is correct because genetic diversity occurs immediately. c. both are correct because genetic variation can occur or long period of time. d. neither are correct because genetic diversity occurs over any period of time