Answer:
The answer is the Immune system (a).
Explanation:
The immune system consists of agents that help your body fight against pathogens and other invading substances. It has your white blood cells, enzymes, mucus, hydrochloric acid (in your stomach), and even your saliva. All these substances help make sure your body is rid of anything that may bring harm to you!
Answer: a. Dressing in several thin layers of clothes
Explanation:
Answer:
open defection_ and lack of sanitation and hygiene in general_is an important factor that cause various diseases: the most common being diarrhea and intestinal worm infections but also typiod, cholerae, hepatitis, polio,trachoma, and others.