The diagram below shows changes that occurred in farmland that was abandoned several years ago. Describe the changes, and identify the process involved. Predict how the land might continue to change.​

Which statement correctly describes other ways in which nebulae and stars are different? a. a star always has a higher density than a nebula. b. stars can form inside a nebula but a nebula can never be produced by any star. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star. reset submit