Which part of the brain controls heartbeat and respiration?
A. the thalamus
B. the cerebrum
C. the brainstem
D. the cerebellum
Answer: C
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Which energy source is recommended to be used heavily in the transition from fossil fuels to locally available renewable resources?
A. geothermal B. wind C. nuclear energy D. petroleum E. natural gas
According to the World Bank's "agglomeration index," roughly half of the world is urbanized
Indicate whether this statement is true or false.
A ball is projected into the air with 100 J of kinetic energy that is transformed to gravitational potential energy at the top of its trajectory. When it returns to its original level after encountering air resistance, its kinetic energy is
A) less than 100 J. B) more than 100 J. C) 100 J. D) not enough information given
If clay particles are smaller than silt particles, why is it harder for moving water to pick up clay?
What will be an ideal response?