The Human Respiratory system.
I believe it would be Mitochondria
I'm not exactly sure, but i would guess the noble gasses. The reason for this is that the noble gasses are stable. There outer shells are completely full. That means they have the same number of electrons.
Answer: proteins
Explanation:
The myofibril proteins are organized into filaments of varying sizes thick and thin and is called myofilaments.
I think the answer is DTell me if I’m wrong
