From the fossils they uncovered, which was the most likely progression of environments in that area ?

I hope this helps!

Explanation:

I think it was first an ocean and then became a desert.

a.) are both appointed for life

the national congress's powers over the states were specific and definite: it had the sole power to negotiate treaties, declare war, and make peace. all powers not granted to congress were reserved for state governments. congress had no power to levy taxes, for example.