Roosa carried possibly 2000 or more seeds in the cannister in his personal kit, a small canvas pouch that stayed with him as he orbited the Moon in the command module "Kitty Hawk" in February, 1971. Unfortunately, the seed bags burst open during the decontamination procedures after their return to Earth. . . .
How does the information in this excerpt help the reader understand the meaning of the word decontamination?