Any combustible hydrocarbon deposit formed from the remains of prehistoric organisms. Examples are petroleum, coal, and natural gas.
Fossil Fuel,Fuel, Fossil,Fuels, Fossil
D000397
Air Pollution
The presence of contaminants or pollutant substances in the air (AIR POLLUTANTS) that interfere with human health or welfare, or produce other harmful environmental effects. The substances may include GASES; PARTICULATE MATTER; or volatile ORGANIC CHEMICALS.
Air Quality,Air Pollutions,Pollution, Air
D014887
Weather
The state of the ATMOSPHERE over minutes to months.