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Exercise 1



               1.  Identify various areas where germs are commonly found.

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               2.  Explain the different ways in which germs can enter the
                    human body.

               3.  Mention  any three diseases  that you know  in your

                    environment.

              Types of diseases

              There  are different types of diseases  that affect the human

              body. These diseases are grouped into two main types namely:
              communicable diseases and non-communicable diseases.




               Activity 1



               1.  Use the library or reliable online sources to find information
                    about communicable and non-communicable diseases.


               2.  List five examples for each group of diseases you have
                    identified.

              Communicable diseases


              Communicable  diseases are illnesses  that spread from one
              person to another. These diseases are caused by pathogens
              like bacteria and viruses. Examples of communicable diseases
              are malaria, cholera, chickenpox,  tuberculosis,  hepatitis  and
              Corona Virus Disease of 2019 (COVID-19).


              Malaria

              Malaria is a disease caused by parasites called plasmodium.
              The disease is spread by a female mosquito called Anopheles.




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