Which of the following might be included in an ecological community?

Why do carbohydrate molecules function so well as fuel for the body?

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

Cells destroy body cells infected by a virus or bacteria.