Scientists have learned about the structure of earth's interior by a) examining deep wells b) using radar c) studying seismic waves d) using sonar

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

Describe the function of the endomembrane system? what organelles are involved?