BIO-0014 Midterm: Bio14 exam 2 study guide
13 Mar 2017
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Atmospheric co2: there has been a steady increase in co2 levels over the past few decades. This increase due to human industrial activity: serval studies have been done over hawaii, according to the studies we have 0. 04% co2. 10% co2 is lethal for humans: but what does increasing co2 really mean? (possible outcomes) 300 million years ago co2 levels dramatically dropped on a global scale. (possibilities) trees went extinct or trees were being buried under aerobic sediments, mud, or swamps. Photosynthesis is the only source of o2 so it must have still been occurring. Increasing co2 will lead to decreased nutritional content in plants thus requiring to be eaten to have the same effect (higher carbon to nitrogen ratio) Face experiments: face = free air co2 concentration enrichment, the experiment serves to understand how increasing co2 levels will impact our atmosphere and plants in the future, two main questions:
