Glycogen is stored mainly in which tissues

In humans, glycogen is made and stored primarily in the cells of the liver and skeletal muscle.

Insulin converts blood sugar to glycogen and stores it in Liver

all these collisions do one thing, and that thing is explained in the last option. when dusst, rocks and ice collide, they harden and form giant layers of rocks or hard ice.

d)   to harden materials to form different parts of earth’s layers

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bioteacher101