Answer:
autographs
Explanation:
the arrows show the flow of energy, the energy from autographs are flown into rabbits, humans, chickens and sheep because they all fed on producers.
<span>Embryo means "an unborn or unhatched offspring in the process of development, in particular a human offspring during the period from approximately the second to the eighth week after fertilization (after which it is usually termed a fetus)."</span>
I think the answer is 3 and 4
