"Industries are often reluctant to modernize, and obdurate about their right to use natural resources.""The most obdurate foes of the Clean Water Act were the fertilizer companies."
Use it's (with the apostrophe) only when you mean "it is" or "it has." For example: It's time to go. (It is time to go.)It's been a long time. (It has been a long time.) Use its (without the...