Our bodies produce an enzyme called lactase. This enzyme helps our bodies digest lactose (a sugar found in milk). As we age, the amount of lactase our bodies produce decreases. Some people don’t produce as much as others. If you are lactose intolerant, it means your body doesn’t produce a lot of lactase. One option is to drink milk with lactase added to it.
Example: Lactaid
Yeast has many comercial uses in the production of breads, fuel, sodas, and wine.
C. The sun, this gives energy and to animals and food for plants
The answer is
B. Beak shape
This is because in various areas the beaks were different shapes
They will be 100% heterozygous