<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>
Sun heat highly temperature. water was can vapor atmosphere
More enzymes more useful collisions
According to the Doppler effect, the sound of a police car siren is louder and high pitched as it approaches the observer.
The side of a mountain range that faces the wind often receives more moisture then the downwind of the same range
