Because it depends on the amount of humidity and perspiration produced in that area
I think the answer is the sun but i could be wrong
A is for sure an answer , i’m pretty sure C -ISNT- an answer . for b and c, someone can comment on it.
U need to utilize mirrors to build the power of sunlight based vitality for a specific gadget.
20 percent.
Since one strand is 20, the opposite that would connect with it (Thymine) would have the same amount so the total would be 100.
Hope this helps!