Cause and effect of social media NOT COPIED FROM INTERNET

It could cause eye problems and it also can cause an addiction which could cause a real problem.

Explanation:

A cashless society might sound like something out of science fiction, but we’re already on our way. Several powerful forces are behind the move to a cash-free world, including governments and large financial services companies. Even critics of the mainstream financial system and government-issued currencies favor doing away with cash.