What crop is grown in the dryer northern area of nigeria?

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?

Soil color only reflects the amount of organic matter present in soil.

These are the abiotic factor or biotic factors that restricts the numbers, reproduction, or distribution of organisms.