A.) The Sahara B.) The Sahel C.) Savannas D.) Tropical Rainforests E.) The Kalahari Desert 7.) World’s largest desert; located in northern Africa. The sahara 8.) A lush plant and animal habitat located in central Africa. 9.) Dry, sandy region located in southern Africa 10.) Flat or rolling grasslands with small trees and shrubs.

Ifound the exercise on the internet. attached is the list mentioned above.in order for a compound to be considered optically active it can't have any axis or plan of symmetry. the molecule  shouldn't also  be superimposable on its mirror image.with such considerations, the compounds that are optically active are: -third compound on the first image is optically active; -second and third compound from the second image are optically actives.