Carbon Cycle
Nitrogen & Phosphorus Cycle
Energy Transfer in Ecosystems
Food Chains and Food Webs
Ecosystem Services
100

This form of carbon makes up a large portion of the carbon in the atmosphere

What is carbon dioxide (CO2)?

100

This is the main reservoir for nitrogen on Earth.

What is the atmosphere?

100

The Rule of this describes the average amount of unusable energy that is passed on from one trophic level to the next.

What is 10%?

100

These types of organisms always occupy the 1st trophic level in a food chain or food web.

What are autotrophs (or producers)?

100

This type of ecosystem service provides food, lumber or other products for humans.

What are provisioning services?

200

This biological process utilizes carbon from the atmosphere and transforms it into C6H12O6.

What is photosynthesis?

200

Phosphorus is not found in this (sphere) part of Earth.

What is the atmopshere?

200

This states that mas energy is transferred from one trophic level to the next, 90% of that energy is lost as heat.

What is the 2nd Law of Thermodynamics?

200

These types of organisms are essential for nutrient cycling in an ecosystem.

What are decomposers?

200

This type of ecosystem service adds aesthetic, recreational and/or artist value for humans.

What are cultural services?

300

This is the largest reservoir of carbon on Earth.

What are is the ocean (or marine sediments)?

300
Bird guano contains large amounts of this element.

What is phosphorus?

300

This can be described as the total amount of energy captured by producers during photosynthesis in an ecosystem.

What is primary productivity (or gross primary productivity)?

300

If a mouse ate an acorn and a snake then ate that mouse, the snake would be this type of consumer in the food chain.

What is a secondary consumer?

300

Photosynthesis is an example of this type of ecosystem service.

What are regulating services?

400

This is the weak acid that forms when carbon dioxide dissolves in water (like the ocean).

What is carbonic acid (H2CO3)?

400

This is the chemically inert form of nitrogen and is found mainly in the atmosphere.

What is N2?

400

This is subtracted from gross primary productivity in order to calculate net primary productivity of an ecosystem.

What is plant respiration?

400

This type of consumer feeds on a tertiary consumer in a food chain.

What is a quaternary consumer?

400

Large trees called mangroves protecting the shoreline from erosion during heavy storms is an example of what kind of ecosystem service?

What are regulating services?

500

This form of carbon is found in the shells of marine animals.

What is calcium carbonate (CaCO3)?

500

In this stage of nitrogen fixation, nitrates (NO3) are reduced to N2 and returned to the atmosphere.

What is denitrification?

500

This would be the gross primary productivity if the net primary productivity was 45,000 kcal/m2/yr and the plant respiration amount was 10,000 kcal/m2/yr.

What is 55,000 kcal/m2/yr?

500

Deep ocean thermal vents receives no sunlight so this reaction is used to bring energy into their ecosystem.

What is chemosynthesis?

500

Natural capital is made up of these two factors.

What are natural resources and ecosystem services?