Which contributions to the lack of the period of heavy bombardment on eartha. the moon's gravityb. earth's atmospherec. earth's volcanoesd. earth's magnetic field

Amylase is an enzyme found in the human digestive system. why do you think it was important to keep the enzyme temperature above 37 degrees celsius (98.6 degrees f)? describe what might happen if the temperature decreased by 10 degrees celsius.

Sexual reproduction in the parent cell will result in offspring with a) identical genetic information. b) half the genetic information. c) double the genetic information. d) four times the genetic information.

Which are reasons cells undergo cell division?