Cholera is caused by the bacterium, Vibrio cholerae and produces CTX (cholera toxin, choleragen)...
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Aerobic bacteria can be used to use the available oxygen in the water to degrade the pollutants in the waste and convert it into energy it can use for its metabolic processes.
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If the newly formed metamorphic rock continues to heat, it can eventually melt and become molten (magma). When the molten rock cools it forms an igneous rock. ... Metamorphic rock can change into igneous or sedimentary rock. Igneous rock forms when magma cools and makes crystals
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2 Tt and 2 tt or 50% for both heterozygous and homozygous recessive your welcome.