Answer :
Hi there!
Teaching by online is a secondary form of teaching. It poses some dangers as well as uses. They are listed below :
USES :-
☆ Students don't need to go to school and waste time and energy.
☆ Only a device is needed for joining.
DISADVANTAGES :-
☆ Internet connection is needed. Also, everyone doesn't have good internet.
☆ There are many issues happening.
Hope it helps ...