How big is 1 nm?
A) 1 x 10^-12 m
B) 1 x 10^-9 m
C) 1 x 10^-6 m
D) 1 x 10^-3 m
B
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Billions of poverty-stricken people do not have access to basic necessities of life. The lack of which one of the following basic necessities affects the largest number of people?
a. enough fuel for heating and cooking b. adequate sanitation facilities c. clean drinking water d. adequate housing e. enough food for good health
Plants that are allelopathic
A) have very sharp spines instead of leaves. B) cannot tolerate long periods of drought. C) produce flowers very rapidly after a rain event. D) are likely to be located away from other plants.
The interior of the North American continent was flooded by the Middle Jurassic
a. Navajo Sea. d. Sundance Sea. b. Moenkopi Sea. e. none of the above c. Morrison Sea.
Deep ocean trenches are surficial evidence for ________
A) rifting beneath a continental plate and the beginning of continental drift B) transform faulting between an oceanic plate and a continental plate C) sinking of oceanic lithosphere into the mantle at a subduction zone D) rising of hot asthenosphere from deep in the mantle