B. an ecosystem
An ecosystem contains a community (several species of organisms) and the environment including air, water, and more.
The statement above is TRUE.
When a controlled substance is prescribed with other drugs, it must be marked with a red one inch letter 'C' in the lower right hand corner.
A controlled drug refers to a drug whose use and possession is regulated by the government.<span />
When cattle are slaughtered and processed, E. coli bacteria in their intestines can get on the meat. Ground beef combines meat from many different animals, increasing the risk of contamination. E. coli bacteria on a cow's udder or on milking equipment can get into raw milk or runoff from cattle farms can contaminate fields where fresh produce is grown. Certain vegetables, such as spinach and lettuce, are particularly vulnerable to this type of contamination.
B.
Asbestos was used in housing for many years because it was cheap to manufacture and was amazingly heat-resistant, but was found to be incredibly dangerous, causing innumerous accounts of lung cancer and related problems.
This is from memory, but I will double check after I answer.
<span>http://www.geosociety.org/science/timescale/timescl.htm
The geologic time scale is organized based by major geological events.
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