Some health care professionals recommend that children use insect repellent before going outside. Using insect repellent is a good way to keep the insects from
A: spreading disease.

The skin is the largest organ in the human body. Why is skin considered to be an organ?
A: It is made of tissues.

A bus traveled 280 kilometers between two cities. It left the first city at 3:00 p.m. and arrived at the second city at 7:00 p.m. What was the average speed of the bus during the trip?
A: 70 km/h

Which element makes up most of the air we breathe.
A:
nitrogen