carcinogen
Chemicals, ionizing radiation, and viruses that cause or promote the development of cancer. See cancer. Compare mutagen, teratogen.
Subject:
Environmental Science
Forum reference:
Book page:
http://course-notes.org/Environmental_Science
carbon cycle
Cyclic movement of carbon in different chemical forms from the environment to organisms and then back to the environment.
Subject:
capitalist market economic system
Economic system built around controlling market prices of goods and services, global free trade, and maximizing profits for the owners or stockholders whose financial capital the company is using to do business. Compare pure command economic system, pure free-market economic system.
Subject:
capitalism
See capitalist market economic system. Compare pure command economic system, pure free-market economic system.
Subject:
Cancer
Group of more than 120 different diseases, one for each type of cell in the human body. Each type of cancer produces a tumor in which cells multiply uncontrollably and invade surrounding tissue. See carcinogen, metastasis.
Subject:
calorie
Unit of energy; amount of energy needed to raise the temperature of 1 gram of water 1 degree C (unit on Celsius temperature scale). See also kilocalorie.
Subject:
buffer
Substance that can react with hydrogen ions in a solution and thus hold the acidity or pH of a solution fairly constant. See pH.
Subject:
broadleaf evergreen plants
Plants that keep most of their broad leaves year round. Examples are the trees found in the canopies of tropical rain forests. Compare broadleaf deciduous plants, coniferous evergreen plants.
Subject:
broadleaf deciduous plants
Plants such as oak and maple trees that survive drought and cold by shedding their leaves and becoming dormant. Compare broadleaf evergreen plants, coniferous evergreen plants.
Subject:
bitumen
Gooey, black, high-sulfur, heavy oil extracted from tar sand and then upgraded to synthetic fuel oil. See tar sand.
Subject:
Pages
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