The answer is hydrogen and oxygen
False !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
IT WOULD BE 15 CAUSE 10+5 IS 15 AND ITS THE SAME AMOUNT GOING IN AS OUT AND 15 IS GOING OUT SO 15 IS GOING IN.
Hi loves! this is called COEVOLUTION and this is when two or more species interact and adapt to each other's living
Hope this helps!!!