shit you got wrong(changeable)

• Decomposers do not return energy to the environment.
• Plants=constant source of oxygen in a sealed place. Light energy is more important than oxygen.
• Suggest why this food chain could not have another trophic level.

  The amount of energy transferred along the food chain becomes progressively lesser, only about 10% of energy from each trophic level is transferred to the next. Thus, the energy available to the organism in another trophic level will be insufficient for its needs.
• burning of fossil fuels=combustion
• predation =consumption
• Isotopes:

  same amount of protons and electrons, different amount of neutrons.

  Diff in properties? Different physical properties.