An organization of workers, acting collectively, seeking to promote and protect its mutual interests through collective bargaining is known as .

Vanessa had a dream to be a ballerina. with her father's she had that opportunity.

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.