oxygen is a gas produced by _ and used by  _ 

• plants and animals 
• photosynthesis and carbon dioxide 
• animals and plants 
• carbon dioxide and photosynthesis

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

if there is a fire in a forest, there will be less _ in the environment?

• nitrogen
• oxygen

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

All of the carbon in existence is continually recycled in the carbon cycle

• True
• False

Tags

NGSS.MS-ESS2-1

NGSS.MS-LS2-3

How is the burning of fossil fuels related to global warming?

• Magic
• Fuels are hot
• Greenhouse effect
• Photosynthesis

Tags

NGSS.MS-ESS3-4

NGSS.MS-ESS3-5

Which of the following removes carbon from the atmosphere?

• Combustion
• Respiration
• Photosynthesis
• Death

Tags

NGSS.MS-LS1-6

Which of the following is an example of a decomposer?

• Owl
• Fish
• Tree
• Mushroom

Organisms that do not decompose can be buried and become what?

• water
• nutrients
• air
• fossil fuels

Tags

NGSS.MS-LS4-1

Which process converts carbon in the form of sugar into carbon dioxide gas?

• Bioremediation
• Photosynthesis
• Respiration
• Transpiration

Tags

NGSS.MS-LS1-7

If the plant population decreased, the amount of carbon in the atmosphere would _________.

• Stay the same

• Increase

• Decrease

Tags

NGSS.MS-LS2-4

oxygen is a gas produced by _____ and used by ________

• plants and animals

• photosynthesis and carbon dioxide

• animals and plants

• carbon dioxide and photosynthesis

Tags

NGSS.MS-LS1-6