Plants can reduce global warming because they remove from the air.

Carbon Dioxide

Explanation:

Plants have a very important job in our ecosystem, they need to absorb energy from the sun and carbon dioxide from the air in order to do photosynthesis and create their own food, in this process the cabon dioxide molecules are broken apart and create carbon and two molecules of oxygen, the cabron will be used to produce the energy necessary in form of carbohydrates for the plant, and the oxygen will be realesed into the enviroment. Exces of carbon dioxide creates rises the temperature in the atmosphere so plants can help reducing it by removing carbon dioxide form the air.

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."