Magma that cools very slowly deep beneath the surface forms minerals with what type of crystals? a. small b. large c. very hard d. cubic select the best answer from the choices provided a b c d

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.

For this question look at the hydropic diagram water that is heated by the sun evaporates. select the number that represents it.

Which of the following is one way in which organisms such as clown fish and sea turtles are able to overcome the many dangers that their offspring encounter and ensure that their species population numbers stay relatively steady