QUES: You need a fork yarn scissors

correct the punctuation.

CORRECTED: You need: a fork, yarn, scissors

QUES: Mountain unicycling can be done on the same terrain as a mountain bike However unicycles typically lack a gear system preventing the user from coasting or reaching high speeds

correct the punctuation.

CORRECTED: Mountain unicycling can be done on the same terrain as a mountain bike. However, unicycles typically lack a gear system, preventing the user from coasting or reaching high speeds.

QUES: Prices and availability for leather backpacks Purse and Bag Shopper

correct the punctuation.

CORRECTED:
Prices and availability for leather backpacks | Purse and Bag Shopper