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algae – n. simple plants that grow in or near water
sample – n. a small amount of something that gives you information about the thing it was taken from
generate – v. to produce (something) or cause (something) to be produced
maintain – v. to keep (something) in good condition by making repairs or correcting problems
habitable – adj. able to live in
trace back – idiom to learn about the development or progress of something by reasoning backward from an effect to a cause
in terms of – idiom regarding something; concerning something
contribution – n. something that is done to cause something to happen
driver – n. idiom cause
mitigate – v. to make (something) less severe, harmful or painful
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