1 Select the correct answer.
How much does the diameter of the disk of the Milky Way measure?
O A.
10,000 light years
OB.
1,000 parsecs
OC.
100,000 light years
D.
100 parsecs
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What is one function of the embedded proteins

The production of cells during mitosis into specialized function is recombination or differentiation

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?