How can Seedbanks help protect Biodiversity?

-Seedbanks simply Store lots of Seeds [and that means Genetic Material] from lots of different Plant Species. -If that Plant becomes Extinct, and we have the Seeds for it then we can simply Bring it Back -Seedbanks also help to converse Genetic Variation, which can be an absolute win if one of the Variation is against an Pest, or a Diseases, and Seedbanks can ensure its Safety