A researcher wants to find out if teens have higher rates of happiness if they stay drug-free.
What is the dependent variable?
o the researcher
o happiness
O teens
o drugs

What did economist john maynard keynes believe about deficit spending?

According to "the experts: does the patent system encourage innovation? " what is a key problem with companies pursuing patents specifically to hinder, or prevent, competition?

the ability of diverse groups in multiethnic societies to live together in relative harmony while maximizing equality depends largely on: