Answer:
A) chemical reactions.
Explanation:
"Photosynthesis is the process through which plants convert light energy into chemical energy. Here is the chemical reaction involved: As we can see, water and carbon dioxide combine to form glucose and oxygen. Since new chemical species are formed, photosynthesis is clearly a chemical change.
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Answer:
Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism,
Because if this organism is unknown they will preform tests to see which organism it is
