What do birds do to avoid frigid temperatures?
a)eat more food
b)migrate
c)sharpen there beaks
d)hibernate

the answer is "a.) well–developed vascular system."

explanation:

answer: although many types of viruses can cause a common cold, rhinoviruses are the most common culprit. a cold virus enters your body through your mouth, eyes or nose. the virus can spread through droplets in the air when someone who is sick coughs, sneezes or talks. theres your answer

explanation:

satellites are frequently used to make observations of the orbit on earth