Of the following statements about protected areas that have been established to preserve biodiversity, which one is not correct?

A. National parks are one of many types of protected areas.
B. About 25% of Earth's land area is now protected.
C. It is especially important to protect biodiversity hot spots.
D. Most protected areas are too small to protect species.
E. Management of a protected area should be coordinated with management of the land surrounding the area

Sally and sue were investigating the topic of friction in science. they used a small car and a ramp as seen in the picture to test what they were learning. they knew that they slipped easily on waxed floors but not on carpet, so they decided to change the material on the surface of the ramp to see what happened. they planned to use glass, carpet, aluminum foil, and sandpaper and run the car down the ramp over each surface. what would be the best research question to guide the girls' experiment? a) does the amount of surface area affect the friction on the moving car? b) will the car travel fastest on the glass surface? c) how does the angle of the ramp affect the speed of the car? d)do rougher surfaces tend to create more friction than smooth surfaces?