题目The amount of sea ice surrounding Antarctica has reached its lowest level since modern records began,for the second year in a row.Sea ice is frozen seawater that floats on the ocean's surface around the planet 's polar regions.It forms at much lower sustained temperatures...
megalodon have been found on every continent except Antarctica Age: Middle-Miocene to Pliocene (approximately 16 to 3.5 million years ago) Megalodon evolved from Otodus Subauriculatus (O. Chubutensis) sometime in the Miocene and became extinct in the Pliocene 3.5 million years ago. It is ...
I always recommend Southeast Asia. It’s good for a bunch of reasons. Most of them hinge on the assumption that you’re young, broke, and hail from a westernized culture. First off, Southeast Asia is cheap. Probably less so than it was a few years ago, but you can still get good v...
In the centenary year of the opening of Tutankhamun's tomb,Egypt'smuch-anticipated £889 million Grand Egyptian Museum is inching towards welcoming its first public guests. The world's largest archaeological museum will incorporate 12 exhibition halls and 100,000 artefacts - including nearly all t...
200 million years ago most of the earth's land was one huge continent named Pangaea, meaning "all lands." All the seas were one huge ocean called Panthalassa, meaning "all seas." Millions of years ago, New York City was on the equator. Antarctica was once a rain forest millions of ...
(1)推理判断题。根据第一段Covering 5.4 million square miles in Antarctica and 656,000 square miles in Greenland(our two remaining ice sheets today),an ice sheet is actually a huge land of ice from the Ice Age.These sheets,over thousands of years,f
initial introduction of European species into island habitats was a one-time event. While alien species will always a problem for islands, this massive onslaught of the first coming of the European species will never be repeated — there are no places left with forty million years of isolation....