Cross over? i have no idea lol
To answer your question, the major reservoir for
ammonia is soil. <span>I am hoping that this answer has satisfied your query and it
will be able to help you, and if you would like, feel free to ask another
question.</span>
In the atmosphere, the density of air particles decreases with height, with more gas particles remaining near the surface of Earth. When only taking into account humidity, dry air is more dense than moist air because of molecular weights of the gases.
Main function is to help support and give shape to the cell also serve a transportation function, as they are the routes upon which organelles move through the cell