Answer:D. Prothetic leg
Explanation:
All the other answer choices are still dreamt of by many scientists and engineers. but you always see people wearing prosthetic legs. D is the obvious answer.
Answer:
Carbohydrates, proteins, and nucleic acids are built from small molecular units. The small molecular units are called monomers
Explanation:
I'm not really sure if that was what you were looking for, but I remember learning this in biology. I'm sorry if this doesn't help.
what is olfactory mean can you help me I don't understand thank you
The Answer gotta be C or D