Ocean acidification is sometimes called “climate change’s equally evil twin,” and for good reason: it's a significant and harmful consequence of excess carbon dioxide in the atmosphere<span> that we don't see or feel because its effects are happening underwater. At least one-quarter of the carbon dioxide (CO</span>2) released by burning coal, oil and gas doesn't stay in the air, but instead dissolves into the ocean. Since the beginning of the industrial era, the ocean has absorbed some 525 billion tons of CO2<span> from the atmosphere, presently around 22 million tons per day.
This is a scientific fact...
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Answer
Crater
Explanation
When there is a volcanic eruption, lava , gases, ash and rocks are released on to the surface as super hot mix. The material that has been pulled out of the earth surface form visible volcanic land forms which include caldera, craters, lava domes and lava plateaus.