Water Pollution & Treatment. Science 8 Chapter 2C NCSCOS 3.07. Warm-Up : copy each sentence with the correct response. The 3 classes of indicators are ____, biological, and chemical. Nitrates from fertilizers found in a water supply are _________.
A pollutantis any substance or form of energy that can cause harm to the environment and make it unfit for organisms.
Two types of water pollution: