Cave people discovered gravity. Isaac Newton discovered that gravity is
A. universal.
B. a new force.
C. stronger on Earth than on the Moon.
D. none of the above
Answer: A
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Europe experiences more tornadoes than anywhere on Earth
Indicate whether the statement is true or false
The ________ is based upon the observation that fossil species succeed one another through layers in a predictable order.
A. principle of faunal succession B. principle of original horizontality C. principle of unconformities D. principle of lateral continuity E. principle of radioactivity
Most glaciers are stationary, moving at no more than several millimeters per year
Indicate whether the statement is true or false
The sofar channel is centered where sound ________.
A. is at its minimum B. is at its maximum C. increases with depth D. decreases with depth E. None of these is correct.