At the very end of a small or medium sized stars life cycle, after it has become a red giant what happens to the star?

a. it becomes a supernova
b. it becomes a white dwarf star.
c. it becomes a black hole.

Advances in technology have enabled scientists and researchers to better study the evolutionary relationships between species

Suppose you use three different scale to weigh a bag of oranges. one scale says the nag weighs 2.1 lb, and third says it weighs 2.1 lb. the actual weight of the bag of oranges is 2.153 lb. which of the following best decribes these results?

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