Which is not an optical instrument?

a. camera

b. microscope

c. telescope

d. television

The passage that directs air to the lungs is called a. diaphragm. b. larynx. c. bronchi. d. pharynx.

In science and physics what is the standard unit of measure for speed?

While you are driving in the lane next to the curb on a multi-lane road the car on your left suddenly moves toward you lane. they are about toy crash into your front fender. you