They're a shallow ocean habitat, filled with sea life and made of thin layers of calcium carbonate.
Answer:
it is actually 75% I Don't know why it is not in the options
Write the paper yourself. It is only 300 words.
here are some topics though: greenhouse gases (global warming), forest fires, WV cars putting more emissions that they claim they are in America WV vehicles, and for more just Google north America environment problems. then summarize the problem and write what you think about it. promise it will be done quickly. that isn't even a whole page single spaced typing.
Answer: B.
The Moon's Mantle is too cold to move easily, and has no convection and no active tectonic plate motions, due to the Moon's smaller size and colder temperature than the Earth.