Answer:
Air inside the guard hairs traps heat close to the body, keeping the reindeer warm even in the frigid, windy temperatures of the tundra. The guard hairs also prevent body heat from escaping and melting the snow if the reindeer lies down, keeping it from getting wet and cold.
the answers I put is wrong
If those are the optional answers, it's most likely sodium.
Hey there!
The correct answer is False.
The right lung actually has three lobes while the left lung has two!
Hope this helped and have a great day (: