Answer:yes
Explanation:yes because that is what your teacher is looking for
Answer:
it affects the hardness of the shells because calcium has a high reactivity which causes the shell to be hard
Explanation:
8.3 × 10-6 meters=77 meters
Answer, =8.3=77 meters
Your body through the cells
Well, to answer your first question, Because there are places on Earth that are both biologically rich — and deeply threatened. For our own sake, we must work to protect them. and for your 2nd question, 3 characteristics of magnetic reversal are: field, bar magnet, and molten material. Hope this helps
