You may noticed that the bones you identified comes in variety of shapes. Why do you think some bones, such as humerus and femur, have rounded ends? Why do yo think other bones such as vertebrae and carpals have flat sides?

a. by using fur or clothes to trap heat energy near the body

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: