ENWC201 Lecture 15: ENWC Lecture 15

• School: University of Delaware
• Department: Entomology and Wildlife Conservation
• Course: ENWC201
• Professor: Kyle Mc Carthy

Document Summary

Time frame - warmer than normal across all of the 2010-2020 decade. When greenhouse gas layer thickens - more heat gets trapped, and it gets hotter. Cretaceous plants - k on the graph. Anoxic - oxygen deficit - more co2. Carbon sink - plants taking carbon out of atmosphere, became buried and creates our fossil fuels. Limestone deposits (occur in shallow oceans when things die) Asteroid hits earth, causes atmosphere to drastically change. Sunlight cannot hit the earth, it is hitting a cloud of ash. Took 32 thousand years for the dinosaur species to go extinct. Greenland would have been able to have palm trees at the beginning of tertiary. 40 thousand year ice age cycle - 10 thousand years ago ice age stopped. Pulling the fossil fuels out and begin to burn it in power plants, cars. That carbon is now burnt and released back into atmosphere.