What is rational observation and irrational observation?

Where do the thermocline and an associated pycnocline form? Is deliquescence a physical or chemical change? What does chemical formula of a compound represents? Where are Secretory proteins and membrane molecules are synthesized mainly by what? Which 2 essentials chemicals are made up of living matter? What will happen if more carbon dioxide is in the atmosphere? Why is DNA sticky when extracted? Is round dominant over wrinkled? How does a fuse work if there is a current that is too high? What is K a for HNO 2(aq) H plus (aq) plus NO 2(aq)? When is collagen laid down in an injury site? Why didn't people believe Alfred Wegener's theory on contenental drift? What lowers the freezing point and raises the boiling point? What is unicellular movement? Why saturated system is preferred over dry heat for sterilizing solid and liquid media? Are candles abiotic or biotic? What blood type is most likely to have autism? Who would you die on Saturn? Electron dot structure for elements? What are the careers that use compass everyday?