you need the hyphen only if the two words are functioning together as an adjective before the the noun they're describing.
Answer:
Students who take classes online are less likely to experience peer pressure or violence
Explanation:
Did it on a quiz
Is this the whole question
Answer:
more
Explanation:
fish live in the ocean, cats dont
Answer:
It shows that they were the best Major League Team. Which means they were indeed super successful.
Explanation:
Hope this help