PLEASE HELP FAST Which statement describes the high and low pressure systems and their affect on global climate?
A. High pressure systems bring colder temperatures from the north and south poles resulting in precipitation.

B. High pressure systems bring storms; low pressure systems bring sunny and fair weather.

C. High and low pressure systems do not affect the global climate.

D. Cold air from the poles create high pressure systems. Warm air at the equator creates low pressure systems.

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?

Your sense of touch depends upon: a. direct contact b. heat chemical c. reactions d. pain

Abeaker of water was heated and then placed on a bench in the laboratory. the water cooled until it was the same temperature as the air in the laboratory. which of these explains the mechanism by which the water cooled? a. heat energy was transferred from the water to the air. b. water molecules from the water formed warm water currents. c. the water molecules absorbed energy from the molecules in the air. d. the water released radiation until it contained no heat energy.