I believe the answer is B. Homoiothermal
Blood cells are produced in the bone marrow and the bone marrow is part of the skeletal system. So the answer would be skeletal system<em>. </em>
Plants are producers. The give energy to the herbivores. The gain energy from the sun.
Answer:
answer number 3 onion is correct answer
Explanation:
Caterpillars dont have thick walls