The two systems would be respiratory and circulatory i think not completely sure tho <span />
Carbon atoms in glucose come from carbon dioxide.
Answer:
check out this website,it might help.
Explanation:
https://courses.lumenlearning.com/boundless-chemistry/chapter/physical-and-chemical-properties-of-matter/
Im really not the smartest in the world.
<em><u>Website was not made by me, im just a lazy potat0.</u></em>
