The sahel stretches across africa, about 15 degrees north of the equator. satellite measurements of vegetation reveal it as a transition zone between the sands of the sahara and the jungles of the congo. this map shows vegetation in the final two weeks of june 2005, near the end of the dry season in the sahel. dark green indicates dense vegetation, while light green and beige indicate sparse vegetation and barren land.

rainfall data has been routinely collected for the sahel. is this data indicative of desertification? explain.

a) yes. one of the contributing factors to desertification is prolonged drought in an area.
b) no. desertification is a function of man's activities; it is not the result of natural causes.
c) no. if the seasonal rainfall reverses the effects of a drought, it is not indicative of desertification.
d) yes. if an area suffers under drought conditions, than the native vegetation cannot grow during the appropriate going season.

(usatestprep is giving me the biggest headache of my life)