Which of these is not a pointing device?

trackpad

mouse

trackball

keyboard

Remote sensing of the earth's surface and atmosphere may involve the use of what type of instruments?

Case # 51173878 weighs 814 pounds; case # 51173981 weighs 803 pounds; case # 51174058 weighs 817 pounds; case 51174178 weighs 815 pounds; case # 51174248 weighs 817 pounds; case # 51174495 weighs 781 pounds; case # 51174577 weighs 828 pounds. what are the case #'s of the two cases that weigh the same amount?

What are the requirements to be eligible for the saep scholarship?