What weathering breaks things down and creates a new substance?

Based on this map, which statement about africa’s economic activity is most accurate? a) coastal countries are all members of opec b) economic development is more common with opec nations c) coastal countries have more access to productive resources d) economic development is more common above the sahara desert

What volcanoes form on a divergent plate margin

What distinguishes monsoon asia from the remainder of asia? what are the consequent differences between the two?