input: It became too clumsy and never became popular
fixed: It became too clumsy and never became popular.

input: Overall student rating 42 50 16 reviews
fixed: Overall student rating: 4.2 /5.0 (16 reviews)

input: One chicken weighs approx 6 gram
fixed: One chicken weighs approx. 6 gram.

input: Thus our bones muscles cartilage and tendons skin hair and nails consist of proteins which give them structure and stability
fixed:
Thus our bones, muscles, cartilage and tendons, skin, hair and nails consist of proteins which give them structure and stability.