Plz help I need help and this is due today

Choose Three: What are the THREE functions/roles of the respiratory system? *
A.) Taking in Oxygen
B.) Taking in Hydrogen
C.) Removing Carbon Dioxide
D.) Removing Water

2.) Choose Two: What TWO statements are TRUE about oxygen? *
A.) The air you breathe is part of the Earth's atmosphere, the blanket of gases that surround the Earth.
B.) Oxygen makes up about 78% of the gases in the atmosphere.
C.) Your body uses all of the air that you breathe into your lungs.
D.) Most of the air you breathe in goes back into the atmosphere when you exhale.

3.) Fill in the Blank: is needed for the energy-releasing chemical reactions that take place inside your cells. *

4.) True/False: Breathing refers to the movement of air into and out of lungs. *
A.) True
B.) False

5.) True/False: During respiration, oxygen reacts with glucose to release energy. *
A.) True
B.) False

6.) What two main gases are exchanged by the respiratory system? *

1, acd 2,ad,3, oxygen 4,a 5,a 6 oxygen and carbon dioxide

Explanation:

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."