How do you explain this arrangement of fossils? What might have happned?

In this case, the statement that people who exercise for an hour may have lower cholesterol levels is .

An organ system consists of a group of organs that performs specific functions necessary for the survival of an organism. humans have eleven different organ systems: integumentary, skeletal, muscular, nervous, endocrine, circulatory, lymphatic, respiratory, digestive, urinary, and reproductive. discuss the function of neurons, the brain and the spinal cord within the human nervous system while explaining the interrelationship of each organ.

The science for classifying and naming organisms is known as