What is the relationship between a planet's distance from the sun and the length of its year? A. The closer the planet is to the sun, the longer its year. B. The farther the planet is from the sun, the longer its year. C. A year on each inner planet is the same length; it is shorter than a year on an outer planet. D. A year on each outer planet is the same length; it is shorter than a year on an inner planet.

How did the miller-urey experiment impact the way scientists think about the origins of life? use what you know about the miller-urey experiments to discuss the factors needed for life to arise, and speculate on whether life could arise on another planet.

9. the history of life on earth is recorded in

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.