BIO-8 Lecture Notes - Lecture 28: Photic Zone, Deductive Reasoning, Eutrophication
Document Summary
To conclude otherwise is to affirm the consequent, an error of deductive reasoning. Deductive reasoning flows only one way: eliminate hypotheses that observations prove to be impossible. John snow correlated cholera cases with well distributions. The result: something in the water from a particular well causes the disease, bacteria present. Cure: remove pump from well handle to prevent people from having access to the water. The process by which an influx in nutrient concentration, particularly phosphorus, increases photosynthetic activity in cyanobacteria and algae. Makes water cloudy in the euphotic zone due to the mass presence of phytoplankton in the water column that absorb light quickly. Ela: experimental lake area: physically split lake into halves, in one half, increase nitrogen and carbon content to determine what causes algal blooms. C and n had no effect on the phytoplankton: in the other half, increase c, n and phosphorus. This half became murky as chlorophyll content increased (algal bloom happened)
