Tertiary structure is not directly dependent on [ peptide bonds ]
Both A and C is the answer I think
Vulnerability is the quality or state of being exposed to the possibility of being attacked or harmed, either physically or emotionally.
For divergent boundary: when the crust of the earth fractures it allows magma to reach the surface. For convergent boundary: When one of the converging plates move underneath the other, a process also known as subduction; the new magma rises and can erupt to form volcanos. For the Hotspot: magma pushes through cracks in the crust to form volcanos. Hope this helps!!