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In addition to assisting them in manufacturing calcium carbonate, they also give
the animals food and oxygen through photosynthesis. The full extent of the corals'
and the zooxanthellaes' dependence on one another is not yet fully understood, ...
These tiny gastropods extract oxygen from the atmosphere, not the water. The
sprawling roots of the mangroves are small shadowy worlds filled with life. The
large roots provide attachment sites for anemones, hydroids, sea squirts, and ...
One CFC molecule can destroy 100,000 molecules of ozone by removing one of
the three atoms of oxygen that make up the molecule. Global wind patterns carry
the pollutants to the poles where they concentrate, thus intensifying their ...
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I purchased all three books in this set and taught a short course to a small group of high school kids. We had a great time with this course! We did 10 experiments and held very intense all-day ... Read full review