How many calories of energy are available in the bodies of the creatures that eat plankton

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.

Why is it important to study each branch of earth science?

Which measurement unit represents volume? liter kilometer square centimeter centigram