________ is transmitted by an insect
A) H1N1 B) Cholera C) Malaria D) Ebola
C
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When a liter of helium gas becomes twice as hot it has
A. twice the absolute temperature. B. twice the thermal energy. C. both of these D. none of the above
A power tower concentrates solar energy by
A) heating water in pipes that run along rows of mirrors. B) using one very large glass lens to focus sunlight. C) using a large field of mirrors to direct sunlight to a specific location. D) collecting light in a series of fiber optic cables directed to underground steam rooms.
Uranus is famous for its large red circle called the Great Red Spot
Indicate whether this statement is true or false.
Prior to mammals, what animal was the most important predator?
a. Mastodons b. saber-tooth cats c. gastropods d. flightless birds e. Carnivores