Juan wants to compare the effectiveness of two drugs in treating migraines. he administers drug a to a participant and then drug b to the same participant eight hours later when drug a is still in the participant's system. in this case, the study is contaminated by a effect.

1. government controls industry through policy

2.government is both a consumer and a producer

4. government can use policy t influence economy

i did this!

yes

it is because 3 because the citizen the northern democratic party watned the warning on red to blue because it is purple. lol

answer; adoption stage;