Other
Mbari: Marine Flora
For good information about marine flora, go to this site from the Monterey Bay Aquarium Research Institute. It provides details about different types of seaweeds and phytoplankton. It also contains a photo gallery.
BiologyWise
Biology Wise: What Are Nitrogen Fixing Bacteria
Describes symbiotic relationship between leguminous plants and nitrogen-fixing bacteria. Explains the mechanism the bacteria use to fix nitrogen, the chemical formula involved, and different types of nitrogen-fixing bacteria.
BiologyWise
Biology Wise: Unicellular Organisms
A unicellular organism is made of only a single cell. Its characteristics are described and several examples are provided.