Biodiversity of Plants, Animals and other Eukaryotes | Museum of Natural History & Science
Did you know genetic scientists are reorganizing the eukaryote domain of the Tree of Life (which includes plants and animals) from kingdoms to supergroups? Natural history museum activities online.
Extremophiles in Caves: Extremophiles are organisms that thrive in all kinds of extreme environments. They are found throughout New Mexico—on the surfaces of desert rocks, cave walls, lava tubes, and mineshafts. In these environments, scientists have discovered thousands of species of microorganisms whose genes have remained virtually unchanged over billions of years. Going back so far in time, these organisms may harbor important clues to how life originated.
2.0 billion years ago, rising oxygen levels cause iron and iron-containing minerals in the black basalt to oxidize, turning the Earth’s rocky surface shades of red. Rising oxygen levels also create a layer of ozone (O3) in the upper atmosphere, further blocking ultraviolet solar radiation. (Red Earth from the Origin of Life Timeline)