One of your classfellow name X always shows he works harder he was solved thousand of questions as practice before joining this BS, he is fast more intelligent most out spoken and knowledgeable. what is the cause behind these presentation?

did you fail the test? xd

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:

there's the proffessional site that will you.

cell division is not regulated in tumor cells.