Concentration

2 topics · 3 sources

Climate Change

Amount of a chemical in a particular volume or weight of air, water, soil, or other medium. See parts per billion, parts per million.

EPA — Glossary of Climate Change Terms

Amount of a chemical in a particular volume or weight of air, water, soil, or other medium. See parts per billion, parts per million. See parts per billion, parts per million.

EPA — Global Warming Glossary of Climate Change Terms

Science› Energy› Renewable Energy

Solar Energy

Amount of a chemical in a particular volume or weight of air, water, soil, or other medium.

Office of Energy Efficiency and Renewable Energy (EERE) — Solar Energy Development PEIS Glossary retrieved 2014-06-15