How do we learn about earths history?

What type of comparison is everywhere rooms lay open an open tomb In night? 16 fl oz greater than 1pt? How many grams of NaCl can be dissolved in 100g of water at 90 degrees Celsius? Can you feel an earthquake on top of a mountain? How can we separate carbon dioxide and carbon monoxie? What is the slime layer that surrounds gram negative bacteria and keeps them from taking up purple strain? What is Paleozoic Mesozoic and Cenozoic are divisions in the geologic time scale called? 7 g is bigger or smaller then 698 mg? What would biocheemists call the result of chaning many of these molecules together? What selection is a characteristic of both living and non living things? What measurement did Isaac use? Half-life of a radioisotope is? What is the total charge if you have 14 protons 14 neutrons and 12 electrons? What type(s) of intermolecular forces are expected between BeI2 molecules? What does the electronegavity of an atom indicate? Is methanol more soluable than methane? What determines the type of volcano formed? What Arctic animals are affected by global warming? What happens at the end of most cold currents? What is the utility of tissues in multi-cellular organisms?

How do we learn about earths history?