I believe the body is supplied with oxygen by the Circulatory and Respiratory system
Strong base. Anything below seven is an acid while anything above it will be a base. Seven is Neutral because it is directly in the middle. <span />
Answer:
Producer: Deer, Ant's, Carrots, Chickens
Consumer: Dog, Bear,
Decomposer: Mushrooms, Acorns, Flowers, Grass,
Explanation: