Energy/System Definitions

Energy cannot be created or destroyed

No transfer of energy is 100% efficient

Only a fraction of energy is passed from one trophic level to another

Crystal molecule that traps a methane molecule inside

Idea that humans must manage global system through government action

Idea that everything has intrinsic value and environment should be managed through personal restraint

Idea that technology should be used to help/manage environment and be developed

When a company says or shows that are "green" while they may not be

Things we can count, measure, touch

Things that happen (ie. photosynthesis)

Something made from the two previous answers

System that can exchange both matter and energy

System that can exchange energy but not matter

System that can exchange neither energy nor matter

Environmental point of no return

Ability of an environment to respond to ecological harm or disruption

The maximum number of living organisms a region can sustainably support