Which type of mutation causes sickle cell anemia?

To be or not to be that is da question

In a lab, scientists grew several generations of offspring of a plant using the method shown. what conclusion can you make about the offspring? a. they formed from meiosis and mitosis. b. they have half the number of chromosomes as their parent. c. they have low genetic variability among them. d. they will be able to reproduce only after they grow flowers.

Where is most of the fresh water on earth found a in the ocean b in glaciers and in ice caps c in rivers d in the soil