The answer is C.
A very high magnitude star is difficult to see from Earth. That’s because it is very far away. A star that far away won’t be able to radiate heat like those that are closer to Earth.
The answer is the third one. Rice would provide everyone with food but would not allow for all the needed nutrients to be absorbed. Rice is a starch or carb and that's the only compound you would be getting. Your body would then lack other nutrients like protein, and calcium that allow your body to grow and develop properly.
The diversity of species and genes in ecological communities affects the functioning of these communities. and that is all i know
