g Would an observational study or an experiment be more appropriate to investigate the effects on fertilizer on plant growth? Explain.

Calvin ate a candy bar, which caused his body's blood glucose levels to become unbalanced. his body responded by initiating a feedback mechanism to return his body to homeostasis. place the steps of this feedback mechanism in order, starting with the blood glucose imbalance that occurred after calvin consumed the candy bar. a) calvin's blood glucose levels decreased. b) calvin's pancreas stopped secreting insulin. c) calvin's body cells started to take up glucose and store it as glycogen. d) calvin's blood glucose levels increased. e) calvin's pancreas started secreting insulin.

Which property is used to identify the origin of an igneous rock? color density hardness crystal size

Based on the data in your tables, did the light-colored moths have a higher or lower survival rate after the industrial revolution?