Biogeochemical cycles

How does carbon in a grass plant get into a lion?

• The lion eats the grass
• Carbon from grass doesn't end up in a lion. 
• The carbon ends up in the food the lion eats. 
• The lion breathes in carbon given out by the plant

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is the process of combining nitrogen gas with other elements to make nitrogen into usable compounds?

• nitrogen composition
• ammonia 
• nitrogen fixation
• denitrification

Tags

NGSS.HS-PS1-2

What can excess amounts of nitrogen cause in ecosystems? 

• Disrupts the equilibrium of ecosystem, causing number of species to decline
• Leads to improvement of an ecosystem due to healthy plant growth
• Leads to high oxygen content in aquatic ecosystems
• Increases the speed of decomposition of plants and animals 

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Nitrogen-rich fertilizers and manure can cause water pollution.

• True
• False

Tags

NGSS.MS-ESS3-3

NGSS.MS-LS2-4

How do plants get the nitrogen they need?

• from the air
• from the soil or water in which they live
• from the Sun
• from broken-down rocks

Tags

NGSS.MS-LS2-1

Organisms that break down dead plants & animals and release nitrogen back into atmosphere...

• bacteria
• plants
• animals
• producers

Tags

NGSS.MS-LS2-3

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

Where is a lot of the CO₂ located on earth?

• space
• absorbed in the ground
• in the atmosphere acting as a greenhouse gas 
• in plants

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Photosynthesis

• absorbs CO₂
• releases CO₂

Tags

NGSS.MS-LS1-6

Respiration

• absorbs CO₂
• releases CO₂

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

NGSS.HS-LS2-5