14.The respiratory tract starts with the __ and the __ 15 the respiratory tract end with millions of tiny __

Consider the following reaction: 2h2 + o2 —> 2h2o a) what are the reactants in this reaction? b) what are the products in this reaction? c) how many molecules of oxygen are used in this reaction?

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?

Wich is not standing in the way of astronomers getting a good view of different star