Difference between basic and acidic lava

Lava: Magma that reaches the earth's surface is called lava. It may be acidic or basic. Acidic lava is viscous, is lighter in color and has higher silica content. Basic lava is non-viscous, is darker in color and has lower silica content.

Answerequatorial guinea,gabon, and western sahara;

Ibelieve the answer is c. map projections.hope my answer has you : )