Which part of a plant absorbs water and anchors the plant in the soil?
a. root
b. leaf
c. flower
d. stem

What kind of bond is created by the attraction between atomic particles of opposite charge? ionic bond hydrogen bond covalent bond nuclear bond

Match the pollutants. 1. a chlorofluorocarbon smoke 2. a biodegradable organophosphate insecticide freon 3. particle pollution paint 4. hazardous waste monoxide 5. carbon is completely burned malathion 6. carbon is incompletely burned dioxide

20 the compound al(nh3)2 has atoms of nitrogen.