Define soil dagradation & Explain the type of soil degradorion with their controlling measures?

When air at the surface diverges, airflow above must diverge, regardless of hemisphere converge in the northern hemisphere but diverge in the southern diverge in the southern hemisphere but converge in the northern converge, regardless of hemisphere?

What first caused people to consider that the continents were once one large landmass?

How can studying economics us make better choices about how to use scare resources