“We’re going to be going back to submarine volcanoes that we know have been active in recent years to look for what changes might have happened. So that’s part of the mission of the cruise ...

Save guides, add subjects and pick up where you left off with your BBC account. Composite volcanoes are the most common type of volcano. They can have violent eruptions and can grow bigger as ...

However, nitric oxide is a radical, and its direct attack of ammonium, with subsequent uptake of three more electrons to yield hydrazine, would also be a viable alternative for the reaction ...

A biochemical reaction is the transformation of one molecule to a different molecule inside a cell. Biochemical reactions are mediated by enzymes, which are biological catalysts that can alter the ...

Why and how do volcanoes actually erupt? Volcanoes erupt when molten rock called magma rises to the surface. Magma is formed when the earth's mantle melts. Melting may happen where tectonic plates ...

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