The difference between stage 3 and stage 4 sleep is that during stage sleep, waves occur more than 50 percent of the time. a. 3 . . delta b. 4 . . delta c. 3 . . alpha d. 4 . . alpha

This statement is true i just took the test

Answergamma-rays

Based off the appearance of the peppered moth, its markings would not be advantageous in a lush green ecosystem . this could cause their population to decrease as the camouflage factor would be somewhat useless and make them much more vulnerable to predators .hope this : )

Ithink the answer is bhope this !