question: What kind of weather do psychrophiles need to grow and reproduce?
distractor3: water temperatures
distractor1: mixed temperatures
distractor2: Hot temperatures
correct_answer: cold temperatures
support: Psychrophiles grow and reproduce in cold temperatures. The optimal growth temperature of some psychrophiles is 15°C or lower; they cannot grow in temperatures above 20°C. The environments that psychrophiles inhabit are found all over Earth. Psychrophiles live in such places as permafrost soils, deep-ocean waters, Arctic and Antarctic glaciers and snowfields.