Is it competitive with or competitive to?

You decide. Some people want it to be competetive if it is a league game or maybe it's just for fun. Why don't you try it? See for yourself what it's like!

The Photosynthetic enzyme RUBISCO, which normally fixes CO2 into the Calvin Cycle, may also react with O2. So we can say that Oxygen is a competitive inhibitor of RUBISCO (RuBP carboxylase)Catalase...

The smartphone production industry is one of the most highly competitive industries in the US at this time. The main competitors include Apple (iPhone), Research in Motion (Blackberry), and Palm...

That is the correct spelling of "competitive" (contentious).

yes.