| Description | Pollution |
|---|
| A global problem largely due to the sheer volume of pollutants produced by human activities. | |
| The presence of chemicals in the atmosphere in concentrations high enough to harm organsims, ecosystems, or human-made materials, or to alter climate. | |
| This is a pollutant that can cause cancer and comes from radioactive soil and rock surrounding the foundation of a home. | |
| These particles can irritate the nose and throat, damage the lungs, aggravate asthma and bronchitis, and shorten life. | |
| Caused by burning of wood, charcoal, coal, or dung in open fires or poorly designed stoves to heat dwellings and cook food. | |
| A mixture of primary and secondary pollutants formed under the influence of UV radiation from the sun. | |
| When a layer of warm air can temporarily lie atop a layer of cooler air nearer the ground. | |
| A colorless gas that forms when nitrogen and oxygen gas react under high-combustion temperatures in automobile engines and coal-burning power and industrial plants. | |
| | Description | Pollution |
|---|
| Consists of mostly an unhealthy mix of sulfur dioxide, suspended droplets of sulfuric acid, and a variety of suspended solid particles. | |
| A colorless and highly reactive gas, is a major ingredient of photochemical smog. | |
| This is a pollutant from furniture stuffing, paneling, particleboard, and foam insulation. It can cause irritation of eyes, throat, skin, and lungs. | |
| A colorless, odorless, and highly toxic gas that forms during the incomplete combustion of carbon-containing materials. | |
| A chemical element that does not break down in the environment. This indestructible neurotoxin can harm the nervous system. | |
| A colorless gas with an irritating odor. | |
| This mostly regional problem is harming the forests and lakes that lie downward from coal-burning facilities and from large, motor-vehicle-dominated cities without adequate polluti | |
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Planets from the Sun
Multiplication Table
Minute Math (Addition)
