What do these channels indicate about past events on Mars?
A. Glaciers once covered the entire planet.
B. There were explosive volcanic eruptions.
C. The surface once had running water that eroded and deposited sediment.
D. Strong winds eroded into a series of volcanic layers.
Answer: C
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Biofuel farming has become a sustainable way to produce biomass for energy use.
Answer the following statement true (T) or false (F)
A rainshadow desert forms ________
A) when dry air descends from high in the atmosphere between 20° and 30° latitude B) in places where mountain ranges act as barriers to the movement of water vapor C) in cold, polar regions D) near the equator, where moist air rises (because it is hot and less dense) up, away from Earth's surface
What system involves free markets with minimal government intervention?
A) bordeaux B) coup d'etat C) laissez faire D) placido E) torreon
The three basic rock types are
A) conglomerates, clastics, and evaporative. B) laterite, schist, and basalt. C) intrusive, extrusive, and plutonic. D) sedimentary, metamorphic, and igneous.