Question

if air temperature is higher than skin temperature,______ becomes a means of heat loss through evaporation.
multiple choice
sweating
shivering
fever
chills
vasoconstriction

Explanation:

When air temperature is higher than skin temperature, sweating is a physiological mechanism. Sweat (mostly water) on the skin evaporates. Evaporation is an endothermic process (absorbs heat). So, it takes heat from the body (skin) for evaporation, thus causing heat loss. Shivering generates heat (muscle contractions). Fever is an elevated body temperature (not a heat - loss mechanism here). Chills are related to feeling cold (often precede a rise in body temperature). Vasoconstriction reduces blood flow to the skin (conserves heat, not for heat loss when air is warmer).

Answer:

sweating