Scientistshaveworkedhardtofigureoutaverageairtemperatureinordertoseeh

Scientists have worked hard to figure out average air temperature in order to see how much these have changed．One of our best estimates is that the Earth has warmed up about 1 F°in the past hundred years．That may not sound like much, but for the planet even small changes in temperature have big effects．Question：If there were a paragraph following this passage, what would it most probably talk about?A.The influence that the small changes in temperature will have on the Earth．B.The increasing temperature that more and more carbon dioxide is causing．C.The greenhouse effect caused by serious pollution．D.The construction of the big laboratory in the Pacific Ocean．