Changes

# Who discovered them and when were they discovered

# Who discovered them and when were they discovered

# Thermophiles, which live at high temperatures

# Thermophiles, which live at high temperatures

# Hyperthermophiles, which live at extremely high temperatures (present record is 121°C).

# Hyperthermophiles, which live at extremely high temperatures (present record is 121 °C).

# Psychrophiles, which like it cold (one in Antarctic grows best at 4°C)

# Psychrophiles, which like it cold (one in Antarctic grows best at 4 °C)

# Halophiles, which live in high saline environments (like the Dead Sea)

# Halophiles, which live in high saline environments (like the Dead Sea)

# Acidophiles, which live at low pH (acid) as low as pH 1 and who die at pH 7 (neutral)

# Acidophiles, which live at low pH (acid) as low as pH 1 and who die at pH 7 (neutral)