Over a millions of years of animals and plants being crushed down in the ground<span />
The notable
hardness of bone is attributed to the presence of inorganic hydroxyapatites.
Due to the calcium salts deposited in it, resulting to the hardness. The
abnormal hardness of bone, which allows it
to resist the compression.
Answer: A
Explanation: There is no need to conduct and experiment if you already know the answer
convergent boundry (subduction zone)
hope this helps! ❤ from peachimin