<span>"public support for or recommendation of a particular cause or policy."
If you go look up the definition i will be that above. So the best choice is A</span>
Skin acts as a barrier between invaders (pathogens) and your body.
Digestive system defense has enzymes. The enzymes in your stomach, pancreas, and liver help destroy pathogens.
The circulatory system contains immune cells called lymphocytes, which protect the body against antigens (viruses, bacteria, etc. ) that invade the body.
The respiratory system is a layered defense mechanism which relies on components of both the innate and adaptive immune systems to protect the lungs and the rest of the respiratory tract against inhaled microorganisms.
The body’s innate immune system (nervous system), its first line of defense, recognizes infectious microorganisms such as bacteria, and initiates a generalized short-acting response while summoning the body’s adaptive immune cells to mount a sustained and targeted attack.
Answer:
The correct answer is - d. 150.
Explanation:
According to the advice given by The Physical Activity Guidelines for Americans, released in 2008, To maintain substantial health benefits for public health and welfare.
The advice that for healthy adults, adults should workout for 150 minutes or hours and 30 minutes over a period of a week of moderate-intensity. For a vigorous-intensity aerobic physical activity, one should 75 minutes for a week.
I wanted to help but I can’t read the article.
