Answer:
astronomical unit, or A.U.
Explanation:
it is about 93 million miles or 150 million kilometers
Most of the nitrogen<span> that plants and animals </span>use<span> is made by bacteria. Bacteria in the soil </span>can<span> change </span>nitrogen<span> in the atmosphere (N</span>2) into ammonia (NH3<span>), a form that plants </span>can use<span>. ... When plants, animals, and other </span>organisms<span> die, decomposers return </span>nitrogen<span> to the soil.
hope it helps......</span>