How does carbon's high valence relate to its ability to form these large and complex bio molecules?

How does an angiosperm prevent self pollination

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?

What are the proteins in connectivity tissues of your foot examples of?