Which of the following would increase the rate of heat exchange between an animal and its environment?

Question

Vasoconstriction

Wind blowing across the body surface

Countercurrent heat exchanger

Blubber or fat layer

Answer 1

1. vasoconstriction, reduces blood flow (vasco=blood, constriction= constrict) which reduces heat exchange
2. Wind blowing increases heat exchange (think fan), because cooler air take sheet away.
3. Heat exchanger would increase heat echange
4. Fat is insulator and wouldn't work