Fill in the blank to explain what grimy means

What is the function of the somatic nervous system? connects the brain and the spinal cord to the rest of the body carry signals to the muscles and glands includes all nerves controlling the muscular system and external sensory receptors controls internal organs like the heart and bladder

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

Which of these is a provisioning service people get from the ocean