What does selectively permeable mean. a.

i beleive its 1)aids

it provided for selection of government employees through competitive examinations. it also made it unlawful to fire or demote covered employees for political reasons or to require them to give political service or payment, and it set up a civil service commission to enforce the law.

explanation:

on my last question

c. free trade can lead to low pay for workers in poorer countries.