How me and other scientists know about animals that went extinct for million people million of years ago

Use the image below to answer the following questions there are three types of heat transfer occurring in the picture below. write a sentence about where each is occurring. (total three complete sentences in your own words.) on a very cold day, if you place your hand towards the bottom of a window, you can feel the convection of cold air as the cold, dense air sinks. try it out. did you feel the convection? it's a marshmallow on a metal stick over fire

How much would the freezing point of water decrease if 4 mol of sugar were added to 1 kg of water(k=1.86 c/mol/kg for water and i=1 for sugar

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?