G U Y S I S M E G I R L P O W E R P L S F R I E N D M E

Did the universe cool off or get hotter as it expanded after the 'big bang"?

Which statements about the two fossil images are correct? 1. cave bears are ancestors of plateosaurus. 2. plateosaurus were present on earth before ostracoderms. 3. ostracoderms were the first to die. 4. plateosaurus died after the ostracoderms. 5. cave bears are the oldest fossils.

Why are gold and platinum used for jewelry