Four satellites are in orbit around the Earth. The heights of their four orbits are identical. The masses of the four satellites are given in the table. For
which satellite is the gravitational pull of Earth the strongest?

Which is an example of the practical pursuit of alchemy? a. forming perfect substances. b. transforming base metals. c. developing metalworking techniques. d. linking spiritual characteristics with material substances.

What effect would average population growth have on land usage? a. urban use of land would rise to more than 30 percent of available land. b. industrial use of land would rise to more than 30 percent of available land. c. the percentage of available land used as cropland would stay the same. d. cropland would fall to about 10 percent of available land.

The same side of the moon always faces earth because the