The answer is: [D]: hydrochloric acid (HCl).
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Hydrochloric acid (HCl) contains no carbon atoms; therefore it is NOT an organic molecule.
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The answer is B) Amoeba
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Answer:
B. Earth rotates on its own axis and revolves around the Sun.
Explanation:
The earth moves not only in one way but in two ways. It revolves around its axis and revolves around the Sun.
We do not notice it because we are on Earth and we turn together with it.
When the Earth revolves around its (imagined) axis, we call such a movement a rotation, and when it revolves around the Sun - a revolution.
Approximately one billion oxygen molecules. that is because there are about 250 million molecules of haemoglobin in each cell, and each haemoglobin molecule binds to 4 oxygen molecules
