Energy Transformation

What percentage of a lower trophic level's energy flows to the next higher trophic level?

10%

When sunlight strikes Earth approximately

30% is reflected back into space

Which of the following is the balanced chemical equation for photosynthesis?

6H2O + 6CO2 -> 6O2 + C6H12O6

Which of the following is not true about energy in ecosystems?

Energy is recycled after flowing through ecosystems.

Which of the following best describes the fate of energy in ecosystems?

It flows through and is used by ecosystems.

Which of the following best describes energy transformations in ecosystems?

Most of the energy collected by an organism is not passed on to other organisms.

The energy value listed for foods refers to the

amount of energy available as fuel for the body

Energy must be transformed in ecosystems because

energy cannot be created or destroyed, an organism's energy must go somewhere, an organism's energy must come from somewhere (all of the above)

Primary productivity is not limited by

time