Complete the sentence using one of the following words:
toxins, waste or food.
Working together, organ systems eliminate bodily
and provide required substances to all cells in the body.

food

Explanation:

food is a required substance that works together with the body to keep you alive :)

you didn't give any options but heres what i can tell you: an inference is likely to change based on additional observations. the latter is something that you have seen or sensed using your sensory organs while the former is like a conclusion out from what you have observed.