Answer:
1977 is when people first knew about archaebacteria
Explanation:
All organic compounds contain <u>carbon</u>
All organic compounds contain carbon, as well as hydrogen unless it has been replaced by another element
The development of Ozone, Oxygen, Cyanobacteria <span>factored into the development of complex organisms. The correct option is the last option.
</span>The end of the Paleozoic Era was signaled by mass extinction of land and sea animals. The correct option is the second option.
Reptiles evolved from an ancestor of amphibians that developed an egg with a strong outer shell that kept it from drying out. The correct option is the first option.
Answer:
Hey
Plant cells are different than animal cells because they work differently in other words they need things the other cell doesn't need. For example, we need oxygen so we have blood cells, but plants don't need oxygen so they don't.
I hope it helped
<u><em>Wbob1314</em></u>