As a ball falls, the action force is the pull of Earth's mass on the ball. The reaction force is
A) the air resistance acting against the ball.
B) the acceleration of the ball.
C) the pull of the ball's mass on Earth.
D) nonexistent in this case.
E) none of the above
C
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For the urban geographer, urban areas are part of both an economy and a society
Indicate whether this statement is true or false.
Why did Japan invade Korea and Taiwan in the 1890s?
A) The U.S. was about to invade them, so Japan had to act immediately. B) to obtain arable land and coal C) to gain access to the busiest seaports in the world D) to drive up the price of domestic resources E) to acquire the largest petroleum reserves in Asia
Phenomena such as floods, tornadoes, and volcanic eruptions are some of Earth's __________ __________, defined as those elements of the physical environment, harmful to people and caused by forces extraneous to them
Fill in the blank(s) with correct word
The texture of an igneous rock ________
A) records the rock's cooling history B) is controlled by the composition of magma C) is caused by leaching D) determines the color of the rock