A student sets up the experiment shown in the diagram to the right to investigate how friction affects the motion of a toy car. 29. The student releases the car down the ramp and measures how far the car travels. Which variable must the student change to test how friction affects the motion of the car? (S8P3b)

What do science, technology, and disease have to do with each other?

Long-period comets come from the oort cloud particles in earth’s atmosphere material from the asteroid belt the kuiper belt

Abiologist counts the number of rabbits in a population each year and observes a decrease in population. since the coyote population has exploded, the biologist concludes that the coyote population has had a negative interaction with the rabbit population. which describes the biologist’s actions? a.) experimentationb.) inferencec.) observationd.) interacting