Q12 of 43 Page 13

Distinguish between symptoms and signs of a disease.

A symptom is a phenomenon that is experienced by the individual affected by the disease, while a sign is a phenomenon that can be detected by someone other than the individual affected by the disease. For examples, anxiety, pain, and fatigue are all symptoms.

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Why is immune system essential for our health?

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What provisions are made by local authorities to provide clean drinking water ?

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Write down the causal organisms of the following diseases :

Tuberculosis, Kala-azar, Malaria, Measles, Athlete's foot, Cholera.

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Becoming exposed to or infected with a microbe does not necessarily mean developing noticeable disease. Explain.