The presence of till indicates
A) direct deposition by a glacier.
B) deposition by wind.
C) deposition by water.
D) none of the above
Answer: A) direct deposition by a glacier.
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Pangaea is ____________.
a) another name given the Alaskan earthquake of 1964 b) a portion of the mid-Atlantic ridge c) a German word for "plate tectonics" d) the name of a supercontinent meaning "All Land" e) all of the above
Could a single graphic scale be used to measure distances on a Mercator projection? Explain.
Compare the Mercator projection to a globe.
After millions of years of favorable adaptations, Pygmy seahorses ____
A) ?have no significant advantages in their natural environment B) ?are more likely to survive because of their fast swimming ability C) ?avoid predation through camouflage D) ?are able to survive extreme conditions of temperature, pressure, and starvation
People with home septic systems often flush several cups of a powdered substance down their toilets every month or two to keep their systems healthy. These powdered substances most likely contain ________
A) chemicals that bind to heavy metals to keep them from leaching into the soil B) acids that help to clean the insides of the walls of the pipes and septic tank C) chlorine and other disinfectants that help to prevent soil contamination D) bacteria and enzymes that help break down wastes