Ligaments are strips of tough tissues that serves as connective tissue for two or more bones and cartilages. These also holds the joints together. They also serve to protect and support the internal organs. Some of the most known ligaments in the body are that of the knees.
Weathering is the breaking down of the earths surface and erosion it the process of moving the weathered materials from one place to another. deposition which is the state after erosion is the final place the weathered sedement is left
I believe the answer is A. The R group gives amino acid unique characteristics. Hope this helps :)
The answer is B) 9 neutrons
