Energy flow<span> in a </span>food chain<span> </span>starts with<span> the producer organisms through</span>
<span>Because hadrosaurs could not have survived without plants, their presence in Antarctica proves that plants existed there. Additionally, fossil plants have been found in Antarctica.</span>
<span>A because an ecosystem includes all the living and nonliving things within an area :)</span>
A neutral gold atom has 79 electrons
