Well if you take the amount of time in each quarter and the multiply that by 4 you will have your answer.
Thousands of Americans are on the Waiting list for an Organ Transplant.
Answer: the antigens identify the foreign invader
Answer:
Science plays a rather large role in the modern world. Without it, devices such as phones, computers, and even TV wouldn't exist. With advances in science, humans have been able to cure many ailments and diseases that were previously incurable.