Answer:
It helps the cactus live a long time between rainstorms.
Explanation:
A thick, waxy coating keeps the water inside the cactus from evaporating.
Protects brain and spinal cord from trauma, as well as supplies nutrients to nervous system tissue. It also removes waste from cerebral metabolism.
Ecology
Ecology studies the life of living things and their environment.
Answer:
They could all become some sort of food for people.
Explanation: Hope this helps! :)
The function of the digestive system<span> is </span>digestion<span> and absorption.</span>Digestion<span> is the breakdown of food into small molecules, which are then absorbed into the body. The </span>digestive system<span> is divided into two major parts: The </span>digestive tract<span> (alimentary canal) is a continuous tube with two openings: the mouth and the anus.</span>
