Which best explains how the collisions of materials in space contribute to the formation of layers in protoplanets? Pls help A. The materials undergo decay when they collide, which results in the heating and subsequent melting and rising of materials.
B. The collisions release heat, which results in the heating and subsequent melting, sinking, and rising of materials.
C. The materials undergo decay when they collide, which results in the cooling and subsequent hardening and sinking of materials.
D. The collisions absorb heat, which results in the cooling and subsequent hardening and rising of materials.

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?

Lactic acid and energy are produced in muscle cells during choose 1 aerobic respiration cellular respiration anaerobic respiration cellular division

A3 year-old is brought to the burn unit after pulling a pot of hot soup off the stove and spilling it on herself. she sustained 18% second degree burns on her legs and 20% third degree burns on her chest and arms. total body surface area burned is 38%. what icd-10-cm codes are reported for the burns (do not include external cause codes for the accident)?