Are large organisms such as redwood trees and elephant large because they contain extra large cells or just more standard size cells. Explain How

Name the organs of humanelemintary canal.

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

Crossing over is a method of (blank)?