Mantle convection is an important method of heat transport within the Earth. Mantle convection is the driving mechanism for plate tectonics, which is the process ultimately responsible for producing earthquakes, mountain ranges, and volcanos on Earth.
What speech, this needs an attachment.
I believe it is..
<span>C. Whether it is moving toward us or away from us
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The other ones don't make sense, radiant energy is electromagnetic and gravitational energy. You can't tell how many planets are in its solar system from only this information. The number of galaxies is also impossible to tell. The only other one that could perhaps make sense is the distance to the center of its galaxy. But, this again is disproved as one star can't tell you the position of the center.
About 97% of all water is salt water, residing in the ocean. Most of the fresh water is frozen in glaciers and icebergs.
