BiologyWise
Biology Wise: Stomata Function
Describes stomata and their functions in photosynthesis, transpiration, and regulation of water retention and loss by plants.
BiologyWise
Biology Wise: Accessory Pigments
Describes the characteristics and functions of the three classes of accessory pigments that play a role in photosynthesis.
PBS
Pbs Teachers: Scientific American: Forever Wild? Input and Output
Investigate the scientific principles of biospheres, and observe the effects of biological processes on closed systems.