How many ouches in one half gallon?

Why is petrol used in a car engine that gives off exhaust fumes harmful? What is the meaning of Solar orbit? What advantage does the red blood cells has for not containing organelles? What plant imported from America helped to save many Europeans from starvation? What is a circular depression formed by an explosion or a collapse at a volcanic vent? Can you die from injecting insulin if you don't need it? When is Polaris directly overhead? Abrasion and plucking involves what part of glacier? What change does ACh cause in an ACh receptor? Why would a scientist use a higher versus a lower percent agarose solution when preparing a gel to separate DNA? What has prokaryotic celles? Is sampaguita an aerial plant? How many tbsp in 1cup? When is a poisonous plant most poisonous? Are electrons located in energy levels or electron cloud? Did scientist J Robert Oppenheimer led the effort to develop the first atomic bomb? How did the eruption of Mount Vesuvius affect Herculaneum? How do you make anaerobic water? Determination of rate of evaporation of different liquids? What is atomic number of neutral atom with 22 electrons and 26 neutrons?