When the distance between two stars decreases by half, the force between them
A) decreases by one-quarter.
B) decreases by one-half.
C) increases to twice as much.
D) increases to four times as much.
E) stays the same.
D
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During cellular respiration,
A. all the energy in a glucose molecule is lost to the environment as heat. B. some of the energy in a glucose molecule is lost to the environment as heat, and some is converted to energy in ATP. C. all the energy in a glucose molecule is converted to energy in ATP. D. the biomass of the organism increases.
The minimum total fertility rate (TFR) to produce replacement population is ________.
A. 1.6 B. 1.1 C. 2.1 D. 2.6
A nebula is a ________
A) bright star B) black hole C) faded star D) cloud of gas and dust E) small comet
Canada has adequate _________________ to provide for its people and gain wealth.
-GDP -industrialization -water -education -natural resources