Answer:Antibodies can help fight infections. Antibodies can take several days or weeks to develop after you have an infection.
Explanation:An antibody test looks for antibodies that are made by the immune system.
Answer:
Opportunity cost.
Explanation:
When economists refer to the “opportunity cost” of a resource, they mean the value of the next-highest-valued alternative use of that resource. In economics, a trade-off is defined as an "opportunity cost." For example, you might take a day off work to go to a concert, gaining the opportunity of seeing your favorite band, while losing a day's wages as the cost for that opportunity
Objective is to complete as many curl-ups as possible up to a maximum of 75 at a specified pace. ... When performing the curl up students need to get their backs up off the mat far enough so that their fingertips cross the measuring strip.
You need what done? u have no picture attached
When you run you need more blood to function your body
