Approximately how much of earth's surface is covered by land?

a. 70 percent
b. 50 percent
c. 30 percent
d. 60 percent

Why is the price of rice so important? a. rice prices must be kept within reach of the poorest peopleb. rice prices must make a large profit or no one will grow itc. rice prices impact the cost of fruits and vegetables on neighboring farmsb. rice prices have no real importance other than to large corporations

Which evidence is most likely used to indicate the beginning of solar system formation? a. materials combined to form a mass. b. materials were pulled together by gravity. c. water condensed and collected to form oceans. d. different species of microorganisms lived on earth.

If scientists only detect p waves in a certain layer of earths interior what does that tell us?