How far is it to earths center. ( miles) to

What volume of a 0.25 m solution can be made using 0.55 moles of ca(oh)2

“in 1492 columbus sailed the ocean blue” is an example of: a)explicit memory b) procedural memory c) semantic memory d)episodic memory

What function does the limb sever in each animal? how are the limb bones of the four animals similar? based on these similarities what can be inferred about the evolution of the four animals.