BIO 1130 Lecture Notes - Lecture 16: Clathrate Hydrate, Extinction Event, Archean

• School: University of Ottawa
• Department: Biology
• Course: BIO 1130
• Professor: Jon Houseman

Document Summary

Push air into their lungs, inflate lungs, and to expel air, the musculature contracts and squeezes the air out. Need to keep their skin moist: have a bunch of glands that secreted substances to keep skin moist if not in water, therefore, the scales and coverings disappear. Have a series of poison glands as a defence mechanism because they don"t have any scales. Starts to capture insects by using their tongue. Hinged the tongue at the front instead of the back so they have a longer tongue. To walk, they must be able to push themselves up. They must return to an aquatic environment to lay eggs. End of permian largest mass extinction on the planet. Mass extinction: identified where more than 50% of the species found in the fossil record are gone. The average lifespan of species is about 10 million years. Officially 5 mass extinctions identified: we are now officially in the middle of the 6th mass extinction.