Phosphorus is an essential nutrient for plants and animals. phosphorus normally occurs in nature as part of a phosphate ion (po4)3. as you can see from the diagram of the phosphorus cycle, unlike many other biogeo chemical cycles, the does/do not play a significant role in the movement of phosphorus.

Awic dietitian is meeting with a client who has an infant and a young child. the mother says that the young child is a very picky eater and will only eat crackers and juice. the health worker notices that the child's hair is brittle, his nails tear easily, and the skin inside his lower eyelids is very pale. these are all signs of iron deficiency.

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

About how much of the cell mass is watet