Biogeochemical Cycles

What is it called when plants give off water vapor as a waste product?

• condensation
• evaporation
• sublimation
• transpiration

What is the energy source for the water cycle?

• the sun

• the earth

• water

• Gravity

Tags

NGSS.MS-ESS2-4

During which stage do clouds form?

• condensation
• evaporation
• precipitation

Tags

NGSS.MS-ESS2-4

When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.

• Water
• Atmosphere
• Sun
• Air

How do plants affect the air that animals and people breathe?

• Plants use oxygen from the air to make their own food

• Plants release pollution into the air

• Plants take in carbon dioxide and release oxygen

• Plants take in oxygen and release carbon dioxide

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Plants use ____________ to make their own food

• Water

• Sunlight

• Carbon dioxide

• All of these

Tags

NGSS.MS-LS1-6

Which gas do animals release, that plants depend on for survival?

• Carbon dioxide

• Oxygen

• Sunlight

• Water

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

How much of the atmosphere is composed of nitrogen gas?

• 87%

• 38%

• 79%

• 21%

Animals obtain the nitrogen they need directly from the

• soil in their habitat
• air they breathe
• plants they eat
• bacteria living within them

When nitrogen gas is turned in to a form that plants and animals can use is called 

• Combustion
• Photosynthesis
• Decomposition
• Nitrogen Fixation