Which of the following is equal to 0.45 mm3? (b, right? )

4.5 x 10-7 m3

4.5 x 10-10 m3

4.5 x 10-7 cm3

4.5 x 10-3 cm3

Which of these best describes an ionic bond?

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

How can carbon move from "land" to bodies of water? describe the way human impact has lead to increased levels of co2 in the atmosphere.