i think the answer is : The next layer up is called the stratosphere. The stratosphere extends from the top of the troposphere to about 50 km (31 miles) above the ground . The jet stream flows near theborder between the troposphere and the stratosphere.
Hi There! I think you mean the difference between a mold and a cast fossil. A mold and a trace fossil are the same things. A cast is a 3D example of a fossil while a mold fills up the fossil's imprint like mud.
Hope this helps!!!!! :)
For Anyone who dosn't speak this language This is what it says.
to philosophize is to deny knowing if yes why please