Most of the Moon's basalts erupted between about 3 and 3.5 billion years ago, but the oldest samples are 4.2 billion years old, and the youngest flows, based on the age dating method of crater counting, are estimated to have erupted only 1.2 billion years ago.
They are rare, but can significantly increase genetic diversity when reproductive rates are high<span>
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iron and polar molecules
A buffeer is a solution that can resist pH of an acid or basic components.
interdependance can be defined as dependance upon each other...
