ENVIRONMENT PROTECTION

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- No longer inhabited.
- Adaptation to a new climate (a new temperature or altitude or environment).
- Rain containing acids that form in the atmosphere when industrial gas emissions (especially sulfur dioxide and nitrogen oxides) combine with water.
- Having a pH of less than 7.
- Powdered or granular carbon used for purifying by adsorption.
- A chemical added to a pesticide to increase its activity.
- The process of adapting to something (such as environmental conditions).
- The accumulation of molecules of a gas to form a thin film on the surface of a solid.
- The process of exposing to air (so as to purify).
- Depending on free oxygen or air.
- A cloud of solid or liquid particles in a gas.
- A treatment system that removes volatile organic compounds from a fluid by forcing an airstream through it.
- Chlorophyll-containing aquatic organisms without stems, roots and leaves.
- The dense spread of algae in lake water.
- Substance or chemical that kills or controls algae.
- Having a pH greater than 7.
- Any substance that can cause an allergy.
- Clay or silt or gravel carried by rushing streams and deposited where the stream slows down
- Living or active in the absence of free oxygen.
- Any agent that destroys microorganisms that might carry disease.