Animal need in order to build down or breakdown materials. A. Energy B. DNA

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.

Did you know that a single bee would have to go to over 2 million flowers to make a single pound of honey?

When rutherford performed his metal foil experiment, he was surprised that most of the alpha particles