<span>The atmosphere of Venus is mostly carbon dioxide, 96.5% by volume. Most of the remaining 3.5% is nitrogen. Early evidence pointed to the sulfuric acid content in theatmosphere, but we now know that that is a rather minor constituent of theatmosphere.
T</span>he atmosphere of Neptune consists mainly of hydrogen and helium, but about 2.5-3% of the atmosphere is methane. Like Uranus, clouds in Neptune's atmosphere<span> are composed of crystals of methane.</span>
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You answer is A
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A combination of high salinity and low temperature near the surface makes seawater dense enough to sink into the deep ocean. Hopefully this help if it didnt my bad
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A point mutation is a change in the base sequence of a DNA molecule.
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