Which of the following happens when a low - mass star runs out of fuel ? choose all that apply.

a its core becomes a white dwarf

b its outer layers form a nebula , or vast cloud of gas and dust

c its outer layers expand , and the star becomes a red giant

d. gas and dust in a nebula contract to form a protostar

What group has historically made up the largest portion of immigrants in mexico?

Which of the following statements about pesticides and residue is false? a. most conventionally grown produce has detectable levels of pesticides when purchased from the store.b. the us government has determined that small levels of pesticides in produce is safe for humanconsumption.c. organic produce always will be pesticide-free.d. farm workers, children, and pregnant women are at greatest health risk from pesticides. select the best answer from the choices provided.

5. what is a red giant? can our sun become a red giant? why or why not?