Which of the following rests below a laptop and protects the computer from overheating and also your lap from excessive heat?

Hashtags serve to identify the topic of a given tweet true false

How should you specify box sizes on a web page if you want the boxes to vary according to the font size of the text they contain? a. in pixels b. in inches c. as percentages d. in em units

How does a vaccine prevent sickness and individual?