Since the implementation of the Clean Air Act, the concentrations of all major air pollutants have decreased.

absolute strength refers to the maximum force exerted by a body irrespective of body size. relative strength on the other hand is the force exerted by a body in relation to muscle size or body weight.

so the answer is: c. absolute strength measures strength regardless of your body size, while relative strength measures strength adjusted for your weight.

some stis can be transmitted through a handshake. - false