Perform the following metric conversions: Please explain bc I really dont get it at ALL 200.7 pm = nm
0.000357 hm = cm
14.78 mg = g
8.280 μg = pg

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.

Which of the following natural processes is most likely to support the formation of an underwater sinkhole? a pollution buildup from deposited minerals b limestone cave collapsing due to changes in sea level c erosion of large amounts of sand moved by ocean waves d oxidation of rock formed by chemical weathering

Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .