Assertion: bacteria's environment | /r/MadeOf | up to 20 percent salt
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Source sentences:
text: This accounts for the appearance of thermophilic bacteria, which live in the water of hot springs and in warm piles of turf or manure; psychrophilic forms, which live in low temperatures in the water of the polar seas; halophilic bacteria, capable of reproduction in an environment containing up to 20 percent salt; acidophilic and basophilic bacteria, which can grow in an extremely acidic or extremely alkaline environment; and so on.