The white blood cell is attracted to the bacteria because proteins called antibodies have marked the bacteria for destruction. These antibodies are specific for disease-causing bacteria and <span>viruses.</span>
Based on the context in word the word "Lifestyle" is used in the statement, "A career will be most productive, comfortable, and enjoyable when it fits well into one’s lifestyle", the best definition of lifestyle would be option 3 -
a way of living that shows a person’s beliefs or opinions.
Cross-training is athletic training in sports other than the athlete's usual sport. The goal is improving overall performance. It takes advantage of the particular effectiveness of one training method to negate the shortcomings of another
