Over half of your poop is actually bacteria, did you know that?
First modern tree takes a bow in Moroccan desert
First modern tree takes a bow in Moroccan desert In Morocco, tree fossils have been found buried
beneath the desert. The fossils indicate that millions of years
ago, a tree called Archeopteris which looks like a modern tree but
has a different system of reproducing, was the most abundant tree
in the world and had a major effect on the earth's atmosphere and
ecology. During the period when Archeopteris was most plentiful,
oxygen levels in the atmosphere rose as carbon dioxide levels fell.
These trees also added nutrients to streams and their root systems
helped to enhance soil chemistry. 27 APRIL 1999
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