2. Three differences between non-infectious diseases and infectious diseases are:

a. Cause: Non-infectious diseases are generally caused by factors like genetics, environment, and lifestyle. On the other hand, infectious diseases are caused by pathogens such as bacteria, viruses, and parasites.

b. Transmission: Non-infectious diseases cannot be transmitted from one person to another, while infectious diseases can spread from person to person, through insects or animals, or by consuming contaminated food or water.

c. Prevention: Non-infectious diseases can often be prevented through lifestyle changes such as diet and exercise, while infectious diseases are usually prevented through hygiene practices, vaccinations, and the use of medications.

3. Tuberculosis, Ebola, and malaria are all considered infectious diseases because they are caused by pathogens - bacteria, viruses, and parasites respectively - that can be transmitted from one host to another. Despite the differences in their structures - bacteria are single-celled organisms, viruses are acellular entities, and parasites can be single-celled or multicellular - these infectious agents share common functions. They all invade the host's body, evade the immune system, reproduce within the host, and cause harm to the host's body. They also have the ability to mutate and adapt to different environments, which makes them more resilient and harder to eliminate.

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2. Three differences between non-infectious diseases and infectious diseases are:

a. Cause: Non-infectious diseases are generally caused by factors like genetics, environment, and lifestyle. On the other hand, infectious diseases are caused by pathogens such as bacteria, viruses, and parasites.

b. Transmission: Non-infectious diseases cannot be transmitted from one person to another, while infectious diseases can spread from person to person, through insects or animals, or by consuming contaminated food or water.

c. Prevention: Non-infectious diseases can often be prevented through lifestyle changes such as diet and exercise, while infectious diseases are usually prevented through hygiene practices, vaccinations, and the use of medications.

3. Tuberculosis, Ebola, and malaria are all considered infectious diseases because they are caused by pathogens - bacteria, viruses, and parasites respectively - that can be transmitted from one host to another. Despite the differences in their structures - bacteria are single-celled organisms, viruses are acellular entities, and parasites can be single-celled or multicellular - these infectious agents share common functions. They all invade the host's body, evade the immune system, reproduce within the host, and cause harm to the host's body. They also have the ability to mutate and adapt to different environments, which makes them more resilient and harder to eliminate.

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2. Three differences between non-infectious diseases and infectious diseases are:

a. Cause: Non-infectious diseases are generally caused by factors like genetics, environment, and lifestyle. On the other hand, infectious diseases are caused by pathogens such as bacteria, viruses, and parasites.

b. Transmission: Non-infectious diseases cannot be transmitted from one person to another, while infectious diseases can spread from person to person, through insects or animals, or by consuming contaminated food or water.

c. Prevention: Non-infectious diseases can often be prevented through lifestyle changes such as diet and exercise, while infectious diseases are usually prevented through hygiene practices, vaccinations, and the use of medications.

3. Tuberculosis, Ebola, and malaria are all considered infectious diseases because they are caused by pathogens - bacteria, viruses, and parasites respectively - that can be transmitted from one host to another. Despite the differences in their structures - bacteria are single-celled organisms, viruses are acellular entities, and parasites can be single-celled or multicellular - these infectious agents share common functions. They all invade the host's body, evade the immune system, reproduce within the host, and cause harm to the host's body. They also have the ability to mutate and adapt to different environments, which makes them more resilient and harder to eliminate.

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