Hey and thanks for giving me the chance to serve u
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so part one
is the atmosphere
part two
earth and mars
Trees take in carbon dioxide to build their tissues , which releases oxygen for us in the process.
Is Aids Curable?
Aids is part of the reproductive systems
Answer:
the answer is the second option you gave
The correct answer is D. The theory of natural selection provided a better explanation of the processes that were being observed by the scientists.They observed that the related species birds found on one island were slightly different from that of the other, and certain portions earth, have the species, which were not found anywhere else.