2 Type the correct answer in the box. Spell all words correctly.
Which gas prevents the spread of fire and extinguishes it?
is a type of compressed gas that prevents the spread of fire and extinguishes it.

carbon dioxide

Explanation:

It is a non-flammable gas that extinguishes fire by displacing oxygen. The carbon dioxide is also very cold as it comes out of the extinguisher, so it cools the fuel as well.

Co2(carbon dioxide) cut off the supply of air and to the burning material.The fire is thus put out.

4.) metal

"-the movement of carbon from the nonliving environment into living things and back to the environment

-carbon is the essential component of proteins, fats, and carbohydrates (which make up all organisms)

-carbon exists in air, water, and living organisms

-producers convert carbon dioxide in the atmosphere into carbohydrates during photosynthesis

-bacteria in the atmosphere cycles through the system in filtration units

-in cellular respiration, carbon is released back into the atmosphere as carbon dioxide

-some carbon is stored in limestone (forming one of the largest "carbon sinks" on earth)

-largest carbon reservoir on earth= limestone

-carbon stored in the bodies of organisms as fat, oils, or other molecules may be released into the soil or air when the organism dies

-this may form deposits of coal, oil, or natural gas (fossil fuels, which increased the atmospheric carbon dioxide)

-fossil fuels store carbon left over from bodies of organisms that died millions of years ago

-they are located in the surface of earth, deep within the earth and beneath the ocean floor."    

the glands which are associated with each description is given below: