Nutrient Cycles

Where does the carbon come from that plants use?

• Animals
• Water
• Air
• Connecticut

Tags

NGSS.MS-LS1-6

How does carbon dioxide leave the atmosphere?

• Through transpiration
• Through photosynthesis
• Through factory emission
• Sunlight

Tags

NGSS.MS-LS1-6

Which of the following add carbon dioxide to the atmosphere?

• volcanoes
• combustion of fossil fuels
• animal and plant respiration
• all of these

Tags

NGSS.HS-ESS2-6

NGSS.HS-LS2-5

What is happening at 1?

• respiration: releasing CO2
• decomposing CO2 in the soil
• photosynthesis: absorbing CO2
• turning CO2 from the atmosphere into organic molecules

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is A?

• Evaporation
• Condensation
• Precipitation
• Runoff

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

Nitrogen fixation processes nitrogen from which of the following sources?

• lightning
• fertilizers
• dead plants
• atmosphere

Scientists have detected a dramatic decrease in usable nitrogen levels in the soil of a local ecosystem. Which of the following is a likely theory to explain this problem?

• A decrease in the amount of lightning strikes.
• An increase in fertilizer usage at local farms.
• An increase in the biomass forming plants.
• A decrease in bacterial colonies within the soil.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

How animals get the nitrogen they need

• from the air they breathe
• from the water they drink
• from the food they eat
• from the Sun

Tags

NGSS.MS-LS2-3

Organism that breaks down dead plants & animals and releases nitrogen back into atmosphere

• bacteria
• plants
• animals
• producers

Tags

NGSS.MS-LS2-3

Gas that makes up almost 80% of Earth's atmosphere

• oxygen
• carbon dioxide
• nitrogen
• hydrogen