is what is made when making something else ….. In animals it is everything but the edible meat.

Why do we have bi products We want to use as much of the animal as we can so we are not wasteful

What part of the cow is this made from? Other adhesives also contain the milk and skin of cattle.

What about this one?

Get into partners and use the computers to find some more byproducts of cattle. The present it to the rest of the class.