To view data and make it easier for scientists to study the experiment
Number 4 the antigens fight off the infection since the body knows it is an infection
Columns on the periodic table are called C. groups.
Answer:
Phobos
Phobos is nearing Mars at a rate of six feet (1.8 meters) every hundred years; at that rate, it will either crash into Mars in 50 million years or break up into a ring.
Explanation: