How can you determine that a star is about to turn into a red giant?
A. When a large amount of hydrogen has been turned into helium
B. When a large amount of helium is turned into hydrogen
C. When the star falls into the sun
D. When the pressure inside the star exceeds its temperature
idk what subject this is so I'm putting it under biology

Mention true or false : a) cholera is marked by acute diarrhea and no urination. b)mosquitoes are the source of dysentery germs.

How energy flows through each level in this energy pyramid. is all the matter and energy from one level transferred to the next level?

One of the newest applications of cell technology is called cybrid embryos. this process involves replacing the nuclear material of an animal cell with human nuclear material. how might this process affect public policies about research by using stem cells? the same policies and concerns about the use of human embryonic stem cells would most likely apply. the embryos would most likely be treated like traditional animal embryos and regulated accordingly. the process of forming cybrid embryos would most likely be banned by government regulators. the embryos would be treated as regular cells because they are not fully human in origin.