ENVS 1126 : Test 1 Notes
Document Summary
Objective reality functions according to basic principles and natural laws. Every result has a cause; every event will cause other events. Through our powers of observation, manipulation, and reason, we can discover and understand the basic principles and natural laws by which the universe functions. A hypothesis is a tentative guess concerning the cause of an observed phenomenon that is then tested by means of experiments to determine whether it is true and its logical or empirical consequences. Ex:-hypothesis: all of the co2 emitted to the atmosphere as a result of fossil fuels burning and land use change is now in the atmosphere. Evidence: atmospheric co2 concentrations have increased from about 280 pm to 400 ppm since the start. Co2 is acidic, it combines with h2o to form carbonic acid, h2co3. The ph surface seawater has dropped from 8. 2 to 8. 1. The average ph of the surface water of the ocean is not 8. 5.
