It is accually prokaryotic
For air masses to form fronts, they must collide with each other. B.
IDK.
I don't know.
I don't understand the question.
Compare the limbs of different organisms goes in left box. compares fossilized structures to living organisms left box.
other 2 go in the right box hope this helped(:
No, because there is only so much food for them to eat.
The same applies for all levels of the food chain.