Will give ! an unlabeled hierarchical diagram of various astronomical bodies is shown below. the labels a, b, c, and d can be used to represent the milky way, universe, planets, clusters, and stars. part 1: which four astronomical bodies would you choose to represent the four labels in the diagram? part 2: justify your choice based on the hierarchical relationships in astronomical bodies

The reactions that occur in the ribosome, where amino acids are combined to form proteins are anabolic or catabolic?

What is the next step in muscle contraction after the actin changes shape? (apex)

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?