Environmental microbiology
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What are biotic and abiotic factors
• Biotic factors are dead or living organsims • Abiotic are non living components such as H20, light, temp, atmospheric gases and minerals • Element are cycled between the biotic and abiotic
What happens in the carbon cycle?
• CO2 goes to the plant for photosynthesis and the animal eat off the plant and breathe it out • CO2 goes to the ocean via sedimination makes CaCO3 limsteone and shells • Animals and plants become decomposed and it goes to fossil and fossil covert to fuel such as oil coal and gases which are used for combustion (car) • The car release via pollution the CO2 out again and the cycle starts again
What happens in the nitrogen cycle?
• Nitrogen goes to the soil via rain or snow and it finds bacteria on the plant • Nitrogen binds to hydrogen on the plant maiking ammonia via nitrogen fixation • Ammonia binds with o2 via nification making nitrites, nitrites nitry the bacteria making nitrates which are absorbed by the plants by assimilation or it goes to the atmosphere by de-nitrying bacteria