Which statement is scientifically based? O Mutations rarely occur.
O All mutations are harmful.
Some mutations can be contagious, like infections.
O Mutations are not passed from parent to offspring.

option a is correct

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.

if you add everything up correctly you should get 69 i got this because 50 plus 19 is it