The answer is b. plant structures.
Photosynthesis is the process by which plants use solar energy to produce glucose from carbon dioxide and water. Carbon dioxide enters the leaves, plant structures, through the<span> stoma and is incorporated into organic compounds. </span>
All cells have robosomes, DNA, cytoplasm and plasma membrane.
I hope this helps!
The ph scale ranges between 0 to 14. I hope this helps love! :)