Answer:
A) the pressure of Earth's crust upon Earth's mantle
Hydrogen, Carbon, Nitrogen, and Oxygen all make up amino acids.
<span>Both photoautotrophs and chemoautotrophs synthesize organic compounds from (inorganic) carbon dioxide, a process known as carbon fixation. Photoautotrophs get the energy to perform these reactions from light. Chemoautotrophs get it from electron donors such as hydrogen sulfide and ammonia. Cyanobacteria, by contrast, convert nitrogen from the atmosphere into ammonia, a process known as nitrogen fixation.</span>
<span>people with an impulsive personality have a higher rate of substance abuse and dependence.</span>
Normally it’s the plasmodesmata that allows exchange of molecules between adjacent cells. But I’m still not sure if water is included!
