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If there was less carbon dioxide, would rain be basic?

Most likely, the rain would still be acidic, at least from thunderstorms. The reactions involved are fairly well-known and their documentation has crossed over into nontechnical sources such as The ...
Oscar Lanzi's user avatar
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If there was less carbon dioxide, would rain be basic?

If the rain is pure water (H2O), then it would have a pH of 7 (give or take a small variation with temperature ; but between STP and NTP (freezing point and room temperature) that doesn't make much ...
Rockdoctor's user avatar
1 vote

Likely air composition in cave only accessible from underwater?

It's extremely likely that the cave was on dry land a few tens of thousands of years ago. Early humans would not have had any diving equipment, so 30+ meters below the waves was downright inaccessible ...
Costillo's user avatar

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