I think it’s b the answer
CFC - is an abbreviation formed from chlorine, fluorine, and carbon
Air Pollution - is formed by the gases released when burning of fossil fuels, such as as coal and oil, combined with rain.
The Green House Effect - is the reduced rate at which the earth loses heat, causing an increase in earth’s temperature
Carbon Monoxide - is formed when fossil fuels or turpentine are incompletely burned in the presence of sunlight.
Smog - is a colorless, odorless, gas
Acid Rain - results when substances contaminate the air
The circulatory system is responsible for bringing food and oxygen to every cell in your body. The respiratory system is responsible for carrying oxygen and carbon dioxide in and out of your body.
Hope this helps
