Looking at the river below, what happened to make the edges curve?

without the article i believe the answer could be a because algeria is a low soci-economic country in africa and most countries that ahve such qualities lack womens rights

b.

developed countries have tended to improve the environment, while developing countries have tended to damage it.

b. 20: 5

explanation:

20% of the worlds population lives in southwest asia, and less than 5% of the world's

land area.