Neonicotinoids are used ________
A) on seeds to protect the plants from insects after the seeds germinate
B) in the manufacture of cigarettes
C) in the treatment of brain and bone cancer
D) as fertilizer for tobacco crops
E) as a toxin by milkweed plants
Answer: A
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When 100-kg astronaut Sally ejects 0.1 kg of gas at 50 m/s from her propulsion pistol, she recoils at
A. 5.0 m/s. B. 0.5 m/s. C. 0.05 m/s. D. 50 m/s.
What do the Permian and Cretaceous extinctions suggest about climate change?
A. Mass extinction events are usually the result of interaction with asteroids and other material from space, rather than climate change. B. Climate change can lead to mass extinction. C. Milankovich cycles underlie extreme climate change which can lead to mass extinction. D. Climate change can cause small-scale species extinction events.
In what region of Mars is microscopic life most likely to exist?
A. deep within the planet's core B. beneath the planet's surface, where melting water may pool C. at the equator, where temperatures are most moderate D. at the poles, where ice caps may harbor microorganisms
Earth’s ocean stores large amounts of carbon dioxide during the cold periods of an Ice Age