Irrigated land accounts for approximately what percentage of human food production?

a. 10
b. 30
c. 50
d. 75
e. 90


B

Biology & Microbiology

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Indicate whether this statement is TRUE or FALSE.

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A fourth type of restriction enzyme is identified that cleaves at precise locations like a type II enzyme, but it also occasionally makes mistakes and cuts elsewhere. Would this type of enzyme be a useful enzyme to use in molecular cloning?

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Why do nitrogen-fixation nodules contain large amounts of leghemoglobin?

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