The charge on the protein is the sum of all positive charges and negative charges on the amino acids it contains. Proteins are composed of several amino acids that contains different functional groups. These groups may have positive, negative or neutral charges depending on the pH it is in.
Answer:
Renewable resources can be replenished, such as water. Non-renewable resources are limited, like oil. A sustainable option is one that can be reused without affecting the environment.
Explanation:
Trees soak up rain from the ground and store/use it. Without trees to soak up the water on the ground, it stays put > pools > floods.
Also, a little bit of rain stays on the trees' leaves. This may not seem like a lot, but there are many trees in a forest with many many leaves all holding water :)
