How can scientists use this technique to control gene expression?

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 type of competition exsist between two species. turtles and fish

Which was most likely an effect on society that resulted from improvements in blood handling during world war i and world war ii?