a snowboarder wearing a green jacket jumping a green rainling
A snowboarder is doing a trick.
A man is water skiing.
Some tests have higher specificity than others.
A person is taking a picture.
Wear good hiking boots, gloves, hats and pack extra-warm clothing.
Bacteria is responsible for the loss of teeth.
a man is looking at his webcam
A toddler naps in a crib.