They only have one electron in their outer most shell which makes them very reactive.
D) Lesser amounts of fresh metals would be needed.
1.Disease resistance of one plant.
<span>2. Food-producing capacity of another.
Hope this helps xD</span>
Answer:
1. Providing structure --> Collagen makes skin strong yet flexible.
2. Maintaining homeostasis --> Insulin controls the concentration of sugar in the blood.
3. Fighting Disease --> IgA prevents the buildup of viruses and bacteria in the gut.
4. regulating chemical reactions --> Pepsin works in the stomach to speed up the breakdown of food.
