Answer:
Carbon source.
Explanation:
The ocean is storing carbon, it is a carbon source.
It's storing the carbon until it's needed in the carbon cycle.
Large crystals indicate that it cooled very quickly. If it cooled slowly, it would have time to settle down and make a nice smooth rock.
Answer:
The advantage of this is that there is a larger surface area exposed, more time available and shorter difference for exchange of oxygen.
Explanation:
A) Cell wall (animal cells don't have these structures)
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.
