Globalization has _________ economic disparities and threats to local businesses and identities. 

a. Many teenagers now spend too much time on digital devices. I firmly believe that parents should strictly limit their screen time for some following reasons.

b. Finally, looking at a computer or smartphone screen for a long time can change teenagers’ behavior negatively. They are easy to lose their temper when getting addicted to intelligent tools.

c. Firstly, teenagers who spend a lot of time on screen are less likely to finish their homework and lower their studying performance at school.

d. Additionally, using smart digital devices too much makes young students inactive and indifferent to interpersonal interactions with their friends and other family members.

e. Secondly, too much screen time is bad for teenagers’ health. This can damage their eyesight and cause headaches.