Use the results of Demetri's experiment to explain why the color changed on some test strips but not others.

This is what i found on google “phytoplankton, tiny organisms that live in the ocean, are autotrophs. some types of bacteria are autotrophs. most autotrophs use a process called photosynthesis to make their food.” i hope this you for what your looking for

Idk i think the answer choice is number 1

Digestion because it removes waste