It's an important part of the bird's ability to maintain its body temperature.
Air is a poor conductor of heat, so the air trapped among the feathers
prevents the loss of heat in cold atmosphere, and prevents overheating
in hot atmosphere. Much like our wearing several layers of clothing.
Answer:Tipos de células según su origen evolutivo
Según el origen evolutivo, tenemos dos tipos de células: células procariotas y eucariotas.
Explanation:
Answer:
carbohydrates
Explanation:
like cellulose remains undigested in the intestine
Answer:
estrogen and progesterone
Explanation:
both are the major hormones for emotional and physical changes
