1. In your own words, differentiate absorption, reflection, refraction. 2. Compare/Contrast Sound Waves and Light Waves.

FOR 20 POINTS

in theory, limestone is composed principally of the compound calcium carbonate - caco3, but in reality this compound is deposited in conditions involving a number of other compounds as impurities so it ends up being a mixture of many compounds.

hope this : -)

tony (lordcaos066)