Mammals and birds are able to maintain relatively constant body temperatures. in cold weather, their internal temperatures could be many degrees warmer than the air temperature around them.

how is the heat energy required to warm the body created?

air enters through the nose, moves through the nasal cavity, the pharynx, the larynx, enters the trachea, moves through the bronchi andbronchioles till the alveoli.

the answer is definitely a

i do believe the correct answer would be the third one. location c, because earth is tilted away from the sun at this time

hope this