Answer:
I think that would be the carnicores, whatever is at the top of the chain/web
Explanation: they only get energy from producers by eating the animals that ate the producers. For example, we get energy from plants by eating a cow.
I think I am but
lol sorry idk........................
Answer:
Taking in oxygen & expelling carbon dioxide and working with the circulatory system.
Explanation:
The lungs work with the circulatory system to pump blood cells with oxygen to all cells in the body, the blood then collects waste and carbon dioxide and brings them back to the lungs where they're taken out of the body when we exhale.