Question

Define diseases and state the major factors which are the causes of disease

Answer 1

A disease is a particular abnormal condition that negatively affects the structure or function of part or all of an organism, and that is not due to any external injury. Diseases are often construed as medical conditions that are associated with specific symptons and signs.A disease may be caused by external factors such as pathogens or by internal dysfunctions. For example, internal dysfunctions of the immune system can produce a variety of different diseases, including various forms of immunodeficiency , hypersensitivity, Allergies  and autoimmune disorders.
Causes-Parasites,Pathogens,Microorganisms,Viruses,Germs etc .....


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Answer 2

Answer:

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Explanation: