2inventions revolutionized photography, what are they?

What is added to the < meta > tag to describe the encoding type?

Jasper and samantha are in a robotics competition. the guidelines state that the robots should be able to move a 10-gram weight at least 2 meters and turn in a circle. jasper and samantha have already built the robot. which step of the design process should they follow next to decide whether their robot meets the minimum criteria for the competition?

Under which key category do the page up and page down keys fall? page up and page down keys fall under the keys category.