"They live in hot water springs where the tempertaure is as high as 80°C and the pH as low as 2"The above statement is true for

1.
"They live in hot water springs where the tempertaure is as high as 80°C and the pH as low as 2"
The above statement is true for

1. Thermoproteus2. Methanonoccus3. Thermoplasma4. More than one option is correct