Help!! I need help with this question please 100 points

Which genetic disorders, caused by an extra x chromosome (xxy), is characterized by a lack of testicular development in males, effeminate features, possible mental impairment, and a thin stature?

Achemical that is released by an animal as a signal to other members of the same species is called a pheromone. t or f

Why is the limitations on supplies of freshwater becoming an increasing problem despite the fact that we have desalination technologies