Nonrenewable resources are used commonly and are quickly running out, and it takes longer for us to form more of these.
Both answers C and D are correct, however, answer D makes more sense.
Answer: It's not blocked
https://www.khanacademy.org/science/high-school-biology/hs-human-body-systems/hs-body-structure-and-homeostasis/a/tissues-organs-organ-systems
I think it would be B, please let me know if that's wrong!
