What is a function of the spinal cord ? a. it allows the back to be flexible and move at different angles b. it the spine provide structural support for the body c. it transmits information between different parts of the nervous system d. it produces hormones to send chemical signals throughout the body

What would be the most likely result if the ph of the stomach were increased to 5

Which is an advantage of having memory cells when a pathogen is encountered for a second time. a) the memory cells are what proliferate into clones of cells in response to the binding of an antigen. b) memory cells are vital to the primary immune response in that they immediately recognize pathogens even at the first encounter. c) memory cells are essentially effector cells that are short lived and attack antigens even without having a receptor specific to that antigen. d) it ensures that more lymphocytes with a receptor specific to a particular antigen will be present than in a host that had never encountered that pathogen.

What does natural resource management aim at ?