Which of the following is an example of the endocrine system directly interacting with the nervous system?

A)the vertebrae protect the spinal cord from injury

B)hormones provide feedback that affects neural processing

C)sensory receptors in bones send signals about body position to the brain

D)the brain sends signals that control the speed at which food moves through the intestines

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.

The upper forelimbs of humans and bats have fairly similar skeletal structures, whereas the correspondingbones in whales have very different shapes and proportions. however, genetic data suggest that all three kindsof organisms diverged from a common ancestor at about the same time. which of the following is the mostlikely explanation for these data? a) humans and bats evolved by natural selection, and whales evolved by lamarckian mechanisms. b) forelimb evolution was adaptive in people and bats, but not in whales. c) natural selection in an aquatic environment resulted in significant changes to whale forelimb anatomy. d) genes mutate faster in whales than in humans or bats. e) whales are not properly classified as mammals.

Apond, rich in various micro-organisms, dries up due to drought. how will the amoeba in the pond protect themselves from this unfavorable condition?