I believe, I mean Billy believes in gradualism~
Answer:
glucose and oxygen:C6H12O6 and 6O2 respectively
TO. YOUR. BRAIN. have a nice day?
Explanation:
Results in a decline in CD4+T cell numbers below the critical level, and loss of cell-mediated immunity. Therefore the body becomes progressively more susceptible to opportunistic infections and cancer.
Science
This is true because humans can only know so much due to unexplored lands, water depth, and evidence of extinction being hidden.