When you get a vaccine it injects a controlled amount of the illness into you, so the immune system can build up an immunity. The memory cells come into play when the illness comes back.
This is consistent with the basic principles<span> of overload and progression. Resistance refers Page 3 176 </span>Fitness<span> for Life </span>fitness exercises<span> using PRE from level 3 of the Physical Activity Pyramid. Strength and endurance use resistance in different way</span>
Pasta and rice can be preserved for a really long time as well as beans if not cooked so i would say the answer is B.
Answer:
Dr. Reside's experiment can not be considered effective because his study has only treatment subjects group and lack of control group. That's why his study can be very good but not valid without control group.
In his study, he concluded that 80% children after therapeutic treatment decreased the activity level which can be true but not valid without control group because when he use control group in his study then we will be able to compare the normal or control group and treatment group. Then the study will be valid and effective as well.
