Monday, February 9, 2009

Protists

Protists means the very first. They are eukaryotes because they have a nucleus. Many have chloroplast so they use photosynthesis. Most have mitochondria but some have lost theirs through the years. Many are unicellular and all groups contain unicellular members. They have been around for about 2 million years.

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Tuesday, February 3, 2009

new frog species

Friday, January 30, 2009

Green house gases