Suppose that the opportunity-cost ratio for fish and lumber is 1f ≡ 1l in canada but 2f ≡ 1l in iceland. then should specialize in producing fish while should specialize in producing lumber.

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.

answer; //(no) the u.s.constitution prohibits it because of using the congress for their own personal gain;

answer; illegible handwriting;