The correct answer is: True
The most abundant protein is dead epidermal structures such as hair and melanin.
Answer:
Ionizing radiation comes from these main sources:
Nuclear reactions in the Earth's sun and stars in space.
Radioactive decay in the body's tissues and in the soil.
Radioactive decay of unstable elements in rocks, especially rocks that contain radium and release radon gas.
Other examples of ionizing radiation include alpha, beta, and gamma rays from radioactive decay.
Answer: (idk if i chose more than 1)
I believe its the Last option (optional A)
Explanation:
it gives structures for reproduction, immune system, hormones, and protection of cells
