AIR

Which of the following gases has the highest atmospheric composition within the Earth's Atmosphere?

• Oxygen at 78%
• Nitrogen at 78%
• Carbon Dioxide 78%
• Methane 78%

Which of the following gases is not part of the earth's atmosphere?

• Nitrogen
• Oxygen
• Argon
• Copper Sulfate

Which statement is true about the carbon dioxide-oxygen cycle?

• animals breathe in nitrogen and release oxygen which is used by plants
• animals breathe in oxygen and release carbon dioxide which is used by plants
• animals breathe in nitrogen and release carbon dioxide which is used by plants
• animals breathe in carbon dioxide and release oxygen which is used by plants

If all the trees on Earth were destroyed, what would be the effect on humans?

• there would be a lack of food
• there would be a lack of oxygen
• there would be a lack of fresh water
• there would be a lack of carbon dioxide

Animals and plants use substances that cycle through the environment.  Which substance is needed by plants to survive and is released into the environment by animals?

• oxygen
• sugar
• salt
• carbon dioxide

________________ could increase the amount of oxygen in the air.

• Building more houses

• Burning more oil

• Paving more streets

• Planting more trees

Tags

NGSS.MS-LS1-6

Plants use _____________ to make their own food during photosynthesis.

• water
• energy from the Sun
• CO2
• water, energy from Sun, CO2

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What causes an increase in the oxygen level in the atmosphere?

• Oxygen inhaled by animals.
• Oxygen released by animals.
• Oxygen released by plants.
• Oxygen taken in by animals.

What is carbon dioxide used for?

• plants use it to make their food

• it's used to make oxygen

• people and animals use it to breathe

• it's used in baking cookies

What is the process of plants taking in carbon dioxide and releasing oxygen called?

• Respiration

• Produce

• Photosynthesis

• Breathing

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3