Add an alkaline compound to raise the pH to 7.2.
Answer:
a
Explanation:
Each oxygen molecule has 2 hydrogen molecules
If the earth's orbit is far from the sun, then, its rate will be slower than when it is closer to the Sun. When gravitational field lines get closer together,
the magnetic force is strong. We
know that the heavier the body is, the stronger its gravitational pull.<span>
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