The believe that the best answer among the choices provided by the question is A. an underground water source.
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Answer:
Gas Sulfur Dioxide and Ash
Explanation:
Gas sulphur dioxide and ash have a cooling effect on the surrounding environment after a volcanic eruption. The gas sulphur dioxide has special properties which allows it to reflect sunlight away from Earth. It also reflects other volcanic gases in the atmosphere, which ensures cooling at the site of the volcano.
Which process is the most responsible for the increase in early Earth's atmospheric oxygen levels?
Photosynthesis
The answer is C.
Monogamy: when one male breeds with only one female for life.
polygyny: where one male mates with multiple females.
