Can someone please help me this is Biology in 7th Grade

The correct answer is C. They move to an area with lower oxygen concentration

Explanation: Gas molecules can pass through semi-permeable which means they don’t need transport proteins for the movement

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Because the earth is not round ,but it may seem round when viewed from ,our planet but true some points earth is not round was an oblate spheroid -a square that it squashed as globe however is not even a perfect oblate spheroid.in fact isaac newton's first proposed that earth was not perfectly round but it was an oblate spheroid instead.that mean a square that is squashed as its poles and swollen at the