Which of these is not a result of gravity?
a. planets orbit the sun.
b. galaxies attract other galaxies.
c. moons and rings orbit some planets.
d. stars create their own energy while planets and moons do not.

Which best explains why england had the highest standard of living in the world in 1990? a.england started industrializing before the rest of the world b.england had the highest population in the world. c.england hadthe most fertile soil in the world. dengland had more natural resources.

Witch layer of the atmosphere has the most air pressure

How does the use of fertilizers impact the environment?