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cyanobacteria
cyanobacteria is The answer is tiny organisms known as cyanobacteria, or blue-green algae. These microbes conduct photosynthesis: using sunshine, water and carbon dioxide to produce carbohydrates and, yes, oxygen
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Aside from reducing fish stocks, unsustainable fishing practices can have other negative impacts on the marine environment. For example, some fishing techniques such as dredging and trawling can cause widespread damage to marine habitats and organisms living on the sea floor.
Decaying matter is called compost
Next time put the options down below but i've had this question before and the answer was First the sheet erosion, Then the rills, And lastly the gulliessheet