The circulatory system helps the excretory and digestive system do their jobs because the waste from the blood in the circulatory system is eliminated from the body through the excretory system, and the nutrients absorbed by the digestive system are transported through the blood.
Answer:
Explanation:
Wind t Water + Season changing
This would be an example of the symbiotic relationship mutualism because both organisms benefit and neither are harmed
That would be : adenine, thymine, guanine, and cytosine.
