Viruses go around in the air and bacteria you have to touch
Cold air will underlie warmer air at higher altitudes. :^)
Hope this helps!
There are two main theories for the lack of organic material in desert soils. Firstly, the organic life in most deserts is so sparse that it cannot produce much organic matter. Secondly when things do die and decompose in the desert the heat and sunlight often bleach nutrients out of the matter before it is decomposes enough to be absorbed into soil
I’m not sure if there’s options to the question but the answer should be C. prokaryotes convert nitrogen-containing molecules into forms that can't be used by other organisms.
