Atlantic South America countries are able to export beef corn and soy beans because of the regions A large rain forest

B fertile farmland

C lengthy coastlines

D Powerful river

The best sociological research method would have to be using experiments although it has some disadvantages as well

Ithink or blue

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.