Which of the following effects are associated with caffeine?
A) activation of lipases
B) dehydration
C) stimulation of the central nervous system
D) all of these
D
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Urban sprawl is a set of policies and tools that encourage more environmentally sustainable urban development with less dependence on cars.
Answer the following statement true (T) or false (F)
When coal is burned to generate electricity, 70% of the primary energy in the coal is transformed into unused heat. This means that the energy conversion efficiency from chemical to electrical energy is ________
A) 70% B) 100% C) 30% D) 0% E) cannot be determined
Hurricane warnings
A) are given if a hurricane is expected to make landfall in more than 24 hours. B) are given only for hurricanes exhibiting regular behavior. C) are less accurate now than they were 20 years ago. D) are issued with an eye toward balancing the economic costs of preparing for a hurricane versus the probability the hurricane will actually hit the projected target area.
Numerous climate science studies suggest that ________ are the cause of the recent documented changes in Earth's climate
A) human activities B) lunar cycles C) natural variability D) solar variability E) sunspot cycles