All terms in this list:

Phytoplankton: Tiny, often microscopic, plants living in the ocean; part of important food chains in the ocean.

Pollution: Man-made waste which has a negative effect on the environment.

Smog: Pollutants trapped in the air by temperature inversion.

Temperature Inversion: Occurs when a cool layer of air is trapped beneath a warm layer.

Particulate Matter: Matter made of very small solid particles & liquid droplets in the air.

Pollen: Tiny, dust-like grains that seed plant produce; natural kind of particulate matter.

Haze: Cloud-like concentrations of particulate matter.

Point Source Pollution: Pollution that can be traced to one specific place.

Non-Point (Source) Pollution: Pollution that cannot be traced to one specific place.