Earth scientists think that caused significant climate change in the past.

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.

What molecule contains an organisms genetic material, passed down from parents to their offspring

What happens when a scientific theory is shown to be an accurate description of a phenomenon?