What is dark matter? A. The asteroid belt B. Matter that does not emit light C. Black spots on the sun. D. None of the above

None of the above because Dark matter is the name we give to all the mass in the universe that remains invisible

answer; i believe that the correct answer is (light);

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.