The following table shows the distance from the sun of some unknown planets of equal mass. Distance from Sun Planet Distance from Sun W 1.5 AU X 0.723 AU Which of the following best explains which planet revolves at a faster speed? Planet X, because the sun pulls it with a greater force Planet W, because the sun pulls it with a greater force Planet W, because the gravitational force is weakened by distance Planet X, because the gravitational force is strengthened by distance

Before the can be observed by using a transmission electron microscope, cells are sliced into very thin sections. what disadvantage does this procedure present in the study of cellular parts

Which type of scientific statement is defined as a hypothesis or group of hypotheses that can be accepted as true based on the repeated experimentation with similar results

Juan and carol were studying invertebrates in biology. they knew that segmented or earth worms preferred a dark, moist habitat. during this lab, they would be investigating the responses of organisms called planaria or dugesia tigrina. these were simple flatworms that still had a one-way digestive system and a very simple nervous system. juan and carol placed the planaria in a petri dish containing cool, distilled water that was partially covered with black paper. they shined a light on the dish. next, they removed the paper and placed a small amount of chicken liver at one end of the dish. they added a few large salt crystals to the water. finally, they added drops of hot water to the cool water in the petri dish. their results can be seen in the data table. according to their experiment, all but one conclusion is valid.