Which mountains hinder travel between spain and france?

In stage 2 farmers used the land primarily to grow food for their families and their small communities.

According ti the following map, what are the most common mineral resources found in the united states?

Renaldo and nasreen build an electromagnet by wrapping a wire around a nail and connecting the wire to both terminals of a battery. when they test the electromagnet, it can pick up 6 paper clips. their teacher wants all groups to pick up at least 10 paper clips. what could renaldo and nasreen do to increase the number of paper clips their electromagnet picks up?