You are presented with the quiz "an animal requires what by the body for survival" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "an animal requires warmth for survival" and "heat is produced to maintain warmth in the boy". So, what's the best answer to the question?
OPT:
I. stamina;
II. heat energy;
III. energy adaptors;
IV. heat produced;
V. glycogen;
VI. chemical messengers;
VII. heat eaters;
VIII. cool breeze;
IV.