By 2020 what will the regulatory standard for gasoline mileage of automobiles in the United States be?
A) 22 miles per gallon
B) 35 miles per gallon
C) 33 miles per gallon
D) 27.5 miles per gallon
E) 30.5 miles per gallon
B
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Heavy metals can quickly move through ecosystems because they
A) are soluble in water as ions and as a few other compounds. B) quickly dissolve in the fats of animals. C) quickly become incorporated into sugars and starch. D) easily clump together and bind tightly to soil compounds.
You are out camping in a remote area. The next day, you plan to hike the mountain trail and return to camp before dusk. Your friends suggest that after hiking, you might want to enjoy a warm shower. They suggest that before you head out in the morning, you should suspend a strong, black cloth bag full of about 5 gallons of water, so that it sits in sunshine all day. When you return, the water should be warm, and you can enjoy a luxury because of good planning. It works and you are delighted and refreshed! The process that you used to get a warm shower illustrates
A) passive solar heating.
B) active solar heating.
C) solar space heating.
D) flat-plate collection
The joints in the photograph mimic topography, indicating that they formed
A) while the granite was still molten.
B) while the rocks were still buried at great depth.
C) when the weight of overlying rocks was unloaded, allowing expansion along the joints.
D) along a subduction zone.
Land suited for agriculture is called
A) ecumene land. B) biome land. C) physiological land. D) arid land. E) arable land.