All of the following are common water pollutants that can be damaging to the environment except

nitrogen from fertilizers.
heat from industry and power plants.
carbon dioxide from combustion.
suspended solids from plowed fields.

yes it is   dangerous

explanation:

because that foot is discusting and could get you sick

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.