China produces most of the world’s supply of .
A.
oil
B.
timber
C.
rare earth metals
D.
gold

Nami conducts an investigation on plants. she places a grow light on a timer to give the plants different amounts of light to see if this would affect their growth. in this investigation, the amount of light is the .

What kind of government is based on the idea of popular sovereignty?

Whenever there is a vacancy in the office of the vice president, the president shall nominate a vice president who shall take office upon confirmation by a majority vote of both houses of congress