Match these items. 1 .
water droplets
necessary organisms in nitrogen cycle
2 .
denitrification
release of nitrogen from nitrogen compounds
3 .
bacteria and plants
process of using oxygen to obtain energy from carbon-containing food
4 .
respiration
forms as water vapor condenses
5 .
people and animals
use plants for food

4. propanol and isopropanol are isomers. this means that they have a) the same molecular formula but different chemical properties. b) different molecular formulas but the same chemical properties. c) the same molecular formula and the same chemical properties. d) the same molecular formula but represent different states of the compound