The immune system fights off the pathogen by Leukocytes also known as white blood cells. When a pathogen enters the body the immune system becomes alert to it and sends out sends out the Phagocytes (a type of Leukocytes) which engulfs the pathogens.
Answer:
Sarah's calculation isn't correct.
Explanation:
Both milliliters (ml) and ounces (oz) are units used to measure the volume of fluid. One ounce is about 29.6 milliliters. If we multiply this by 16, we'll get about 473ml, which doesn't fit Sarah's original measurements. 473ml is obviously way less than 630ml. Her calculation would be correct if she wrote down 21.3oz (630ml ÷ 29.6 = 21.3oz).
