Water
Carbon
Nitrogen
Phosphorus
Mixed
100

How many steps is the water cycle?

Ten

100

What does CO2 stand for?

Carbon dioxide 

100

Why is nitrogen essential?

Nitrogen is a component of proteins and nucleic acids.
100

Why is it essential?

it is a component of nucleic acids, ATP, and membrane phospholipids.

100

Energy flows in what direction?

Energy flows in one direction

200

What is step 7 of the water cycle?

Percolation- water moving thought the soil

200

What stores carbon?

Photosynthesis

200

What is the main inorganic storage reservoir for nitrogen?

Atmospheric Nitrogen

200

Where is most phosphorus stored? 

It is stored within rocks and soil

200

Carbon, nitrogen, and phosphorus cycle between? 

Abiotic reservoirs and biotic reservoirs

300

What is the first step of the water cycle? 

The water cycle has no true beginnings.
300

When is carbon released?

Carbon is released during cellular respiration.
300
What is nitrogen returned to the atmosphere by?

Microbes

300

What does phosphorous cycle through?

Producers and consumers

300

What does eutrophication cause?

Oxygen-poor water that cannot sustain much life.

400

What is it called when the surface takes in water from precipitation.

Infiltration

400

Why is carbon important?

It is a part of all organic molecules

400

How to herbivores and predators obtain nitrogen?

By eating producers.

400

What returns phosphorous to the soil

Decomposers 

400

Animals move chemicals between...

Ecosystems
500

What are the steps of the water cycle listed in order?

1. Producers and consumers 2. Evaporation 3. Condensation 4. Precipitation 5. Interception 6. Infiltration 7. Percolation 8. Transpiration 9. Runoff   10. Storage  

500

What is the main inorganic storage reservoir for carbon?

CO2

500

What happens during denitrification?

During denitrification, bacteria convert NH4 and NO3 back to N2 and release it into the atmosphere.
500

What are the main inorganic storage reservoirs for phosphorus? 

Phosphate-rich rocks

500
How do herbivores and carnivores obtain phosphorus? 

They gain it by eating.