Using technology in the field of agriculture has enabled farmers to feed a growing human population.

a. true
b. false


a. true

Biology & Microbiology

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Which of the following is a neurotransmitter that triggers a contraction of a voluntary muscle?

A) acetylcholine B) action potential C) synapse D) sodium

Biology & Microbiology

The element molybdenum is vital in the process of nitrogen fixation. For which crop would molybdenum be most critical to ensure success?

A) wheat B) apples C) cauliflower D) alfalfa

Biology & Microbiology

Generally speaking a consequence of using an instrumental variable approach with a weak instrument will be:

A. high (in absolute magnitude) coefficient estimates. B. imprecise coefficient estimates (e.g., large standard errors). C. multicollinearity. D. low coefficient estimates.

Biology & Microbiology

Cramps, dizziness, nausea and lack of sweat production are all symptoms of impending heat illness.

a. true b. false

Biology & Microbiology