Oxygen is what animals need in order for Carbon Dioxide to be exhaled while breathing. This is part of what the Respiratory System does. Carbon also enters animals that are in contaminated environments such as living next to a factory or a polluted area.
Hi there!
Early symptoms are fatigue, cramps, nausea, cravings, headaches, and mood swings!
Hope this helps!!!
Answer:
Mutations are essentially evolution. mutations affect organisms because it changes how some things about the organism work, may this be organs, defensive properties, whatever.
Explanation:
May I have brainliest please? :)