NPP/GPP and Rule of 10%

Front

What does the 2nd Law of Thermodynamics state?

Back

As energy is transferred, much of it is lost as heat.

Front

What is the Rule of 10% in energy transfer?

Back

Only 10% of energy is transferred from one trophic level to the next.

Front

If 1000 kilocalories of energy are available at the producer level, how much is available at the primary consumer level?

Back

100 kilocalories.

Front

Which law states that energy is always conserved?

Back

1st Law of Thermodynamics.

Front

If 7500 kilocalories of energy are available at the primary consumer level, how much is available at the quaternary consumer level?

Back

7.5 kilocalories.

Front

What is the chemical formula for photosynthesis?

Back

CO2 + H2O -> C6H12O6 + O2.

Front

Define Net Primary Productivity (NPP).

Back

The rate at which all the plants in an ecosystem produce net useful chemical energy.

Front

Define Gross Primary Productivity (GPP).

Back

The total amount of energy produced by photosynthesis in an ecosystem.

Front

What is the relationship between GPP and NPP?

Back

NPP = GPP - Respiration.

Front

What happens to energy as it moves up the food chain?

Back

Energy decreases due to the 2nd Law of Thermodynamics.