Hazardous Materials Identification System. The Hazardous Materials Identification System (HMIS) is a numerical hazard rating that incorporates the use of labels with color developed by the American Coatings Association as a compliance aid for the OSHA Hazard Communication Standard. 1 HMIS Color Bar.
Definition of greenhouse gas. : any of various gaseous compounds (such as carbon dioxide) that absorb infrared radiation, trap heat in the atmosphere, and contribute to the greenhouse effect.
Greenhouse Gases-The Dangers. Greenhouse gases are dangerous to the environment. The most prevalent greenhouse gas is carbon dioxide. Carbon dioxide and other greenhouse gases are released into the atmosphere by agricultural practices and by the burning of fossil fuels.reenhouse Gases-The Dangers. Greenhouse gases are dangerous to the environment. The most prevalent greenhouse gas is carbon dioxide. Carbon dioxide and other greenhouse gases are released into the atmosphere by agricultural practices and by the burning of fossil fuels.