Answer: B
Explanation:
When you do physical exercises, your energy amount increases, and your body gets stronger. When you do physical exercises, you get an improved school attendance. When you do regular physical activity, your self-image improves. The answer has to be option B.
Answer:
The skin
Digestive tract
Vagina
Mucous membrane
Explanation:
The skin prevents microbes from entering the body
Digestive tract e.g. stomach acid is a natural defence mechanism
The vagina is acidic and this prevents harmful bacteria from growing with it's own flora.
Mucous membranes e.g. lining of the mouth, nose, eyelids are all defense mechanisms.
The answer to your question is C.Viral
Business math so she can make money and do business
Explanation:
some examples include;
1) eradication of polio (positive)
2) prematurely born children now have a very high chance of survival due to the advanced facilities such as incubators (positive)
