Answer: U T G U U TT C U U A C
Explanation:
We as human have three fundamental questions, where do we come from,, where are we going, are we along in the universe, the answer to this thrust at the core of our humanity and uniqueness, through science we seek out replies to these inquiries!
1.plant respiration
2.animal respiration
3.photosynthesis
4.natural combustion
5.burning of fossil fuels
I'm so sorry if any is wrong