One difference between carbohydrates and lipids is that
a) lipids will dissolve in water but not carbohydrates.
b) carbohydrates will dissolve in water but not lipids.
c) carbohydrates contain hydrogen, carbon, and oxygen and lipids do not.
d) lipids contain hydrogen, carbon, and oxygen and carbohydrates do not.

volcanoes (an event in the geosphere) release a large amount of particulate matter into the atmosphere. these particles serve as nuclei for the formation of water droplets (hydrosphere). rainfall (hydrosphere) often increases following an eruption, stimulating plant growth (biosphere).

imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.