Nitrogen gas, the major component of the atmosphere, cannot directly be used by plants and animals.
Answer the following statement true (T) or false (F)
True
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An object having twice as much mass as another object also has twice as much
A. volume. B. gravitational acceleration. C. inertia. D. velocity.
Which method do scientists argue is most effective at reducing the amount of air and water pollution?
A. A shift to energy sources such as solar and windpower. B. Attaching pollution control devices to smokestacks. C. Injecting steam into the ground to remove groundwater contaminants. D. Collecting runoff from construction sites before it enters a river.
AC is normally produced by a
A. battery. B. generator. C. both of these D. neither of these
Which requires the most amount of work on the brakes of a car?
A) slowing down from 100 km/h to 70 km/h B) slowing down from 70 km/h to a stop C) equal amounts for either