A positive effect of water seeping through a landfill is that it
A) stops the production of biogas.
B) promotes the decomposition of paper and other biodegradable organics.
C) helps petroleum-based plastics decompose.
D) reduces the amount of groundwater contamination.
B
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In which country in Southwest Asia and North Africa did the Arab Spring begin?
A) Israel B) Egypt C) Lebanon D) Iraq E) Tunisia
A diver who weighs 500 N steps off a diving board that is 10 m above the water. The diver hits the water with kinetic energy of
A) 10 J. B) 500 J. C) 510 J. D) 5000 J. E) more than 5000 J.
What was the reason for installing a worldwide network of seismometers in the 1950s and 1960s?
A) to save human lives by predicting volcanic eruptions and earthquakes B) to study plate tectonic theory C) to monitor underground nuclear bomb testing D) to study mine blasts
________ is the name applied to hot springs on the seafloor where 350 degree Celsius metal-rich solutions are discharged into the cold waters of the ocean.
A. Ophiolites B. Andesite C. Fumaroles D. Hot spots E. Black smokers