Answer:
Protein benefit animals because they need this to form new skin cells. They also use protein to grow hair, build muscle tissue etc. Protein also helps the animals to create chemicals like hormones and enzymes that are needed for their normal function.
Explanation:
Planet earth was probaly formed 30,thousand years ago the first life probably evolved 29 thousand years ago
Dark Energy explains:
How groups of objects function together, and also to keep the universe expanding
Hope this helped.