The different types of resources and how they affect the development process?

These resources, called productive resources, are often classified into three groups: natural resources, human resources, and capital resources. Natural resources (often called land) refer to resources such as coal, water, trees, and land itself. Raw materials used in production come from natural resources.

yes, since there is a positive and a negetive if the positive and negitive wasn't there wouldn't a flow electricity in it.

answer; i believe that the correct answer is ( rivers);