Which gland is most active during the early years of life and plays a critical role in the development of a child's immune system? select one of the options below as your a. adrenal gland b. ovaries c. thymus gland

What is the answer for the complicated molecules that make up living things usually contain carbon. why is carbon so important in these molecules?

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 is the ecological role of food chains and food webs