Which organelle would be missing in a mature red blood cell?

Ronald wants to see if a new shower cleaner works better in removing soap than his old cleaner. he uses the new cleaner on one half of the shower tiles and his old cleaner on the other half. identify the independent and dependent variables in this experiment. enter your answer in the space provided.

Which event would lead to primary succession of a forest?

Your sense of touch depends upon: a. direct contact b. heat chemical c. reactions d. pain