Kayleen Fahrlander Friday 19th 3/3

Class Summary

-Hand in quadrat projects
-Take notes from over head on 1st hand out (fossils/evolution)
-Do questions on 2nd hand out (fossils/evolution)

Thoughts/Opinions

- Evolution is such an abstract concept because it's hard to imagine that every living thing may have come from a single one-celled organism.
-Many people may be skeptical of evolution because of religous beliefs, but there is serious evidence (through the study of DNA bases) that proves that some organisms are closer related than we think.


Above and Beyond

Oldest Fossil Ever Found-A team of Swiss and Austrian geologists found some 3.45 billion-year-old dolomite in the Pilbara range in North West Australia. After etching it with acid they found the fossils using an electron microscope.
It is believed that the fossils are of a cyanobacteria - an organism that still forms thick mats in warm shallow seas today.
In the early pre-Cambrian period, they played a vital role in the development of more complex species by being among the first life forms to use sunlight to help them absorb carbon dioxide and release oxygen and therefore making the atmosphere breathable.