Currently, Antarctica is the coldest and driest place on Earth. Paleontologists have found dinosaur fossils in rock layers below the ice. Based on this evidence, which is a reasonable conclusion about the climate of Antarctica in the past?
Select from:
1). Antarctica has always had the same climate as at present.;
2). At some time in the past, Antarctica was a hot, dry desert.;
3). At some time in the past, Antarctica was much warmer and wetter.;
4). At some time in the past, Antarctica was colder and wetter than it is now.;
3).