Ralph A. Lewin
Contributor
LOCATION: La Jolla, CA, United States
Professor Emeritus of Marine Biology, Scripps Institution of Oceanography, University of California, San Diego.
Primary Contributions (1)
Algae, members of a group of predominantly aquatic photosynthetic organisms of the kingdom Protista. Algae have many types of life cycles, and they range in size from microscopic Micromonas species to giant kelps that reach 60 metres (200 feet) in length. Their photosynthetic pigments are more…
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