(a)State the second law of thermodynamics. (ii) Use the second law of thermodynamics to explain the flow of energy across different trophic levels in a food...

(a)State the second law of thermodynamics.
(ii) Use the second law of thermodynamics to explain the flow of energy across different trophic levels in a food chain.

(b) (I) State three factors that can likely limit the size of human populations.
(ii) Outline two ways each by which humans can overcome the factors named in (b)(i).