What are tectonic plates made up of

I believe that its D...solid rock and molten rock

hi there!

question - how does mountainous terrain affect settlements in a region? choose all answers that are correct.

groups trade with each other regularly.

people travel from settlement to settlement.

why: since they travel to go trade or visit it may be harder to get there because of the mountainous terrain.

hope this : )

answerpeople organize large projects such as levee-building;