I need help 8n flvs 3.06

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.

Identify the examples in which sam interacts only with natural resources

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water