It’s
Primarily trouble is the answer I read it
I am not entirely sure, but i think it would be the respiratory system because plants produce oxygen after taking in carbon dioxide, and that is similar to the human respiratory system. I am not completely sure though. hope this helps!
Answer:
c. radioactive decay
Explanation:
Radioactive decay refers to the natural breakdown of unstable elements or nucleus which lead to the release of energy or particles
And i got 100 on test