How many main types of chemical bonds exist?
A) 1
B) 2
C) 3
D) 4
B
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What is it called when water is withdrawn from an aquifer faster than it can replaced?
A. overpumping B. underpumping C. overpressuring D. recharging
Compare and contrast fissure eruptions and pyroclastic sheet deposits
What factor triggered (caused the start of) the December 1991 debris flows at Caraballeda, Venezuela?
A. Steep slopes B. Excessive rains C. Urban development
A small thunderstorm cloud with virga falling out of its base and blowing dust at the ground
could warn of a severe hazard to an airplane because:a. this could be the first indication of a tornado b. it is likely that hail will soon begin to fall c. this could indicate an intense downdraft or microburst d. the airplane could be struck by lightning