In this task, you are given a question and a corresponding answer. Your task is to generate a fact statement that is useful in answering the given question.

[Q]: Question: Which likely increased atmospheric CO2 recently? Answer: motorcycles.
[A]: carbon dioxide concentrations in the air have increased over the last decade dramatically

[Q]: Question: What requires energy for growth? Answer: a hippopotamus.
[A]: an organism requires energy for growth

[Q]: Question: Magma is sourced in volcanoes and? Answer: is high enough kelvin to melt steel.
[A]:
volcanoes are often found under oceans