Observation

The expected answers are as follows: 

Many candidates did not attempt this question and performance of those that attempted it was poor. In question (a) (b) (c) many candidates avoided this question and those that attempted it could not answer it correctly.
However, the expected answers are as follows:

9 (a)(i) ASPHYXIA

Asphyxia is a state of suspended breathing; due to lack of enough oxygen in the lungs

                   
(ii)    DESCRIPTION OF FIRST AID TREATMENT GIVEN TO A VICTIM OF ASPHYXIA

• remove or loose tight clothing around neck or chest and waist
• place victim’s head downwards with the face turned to one side
• press on the chest and back to expel blockage as much as possible.
• turn victim onto his back, push the head well backward
• get assistance to continue external heart compression/artificial respiration
• continue until spontaneous heart beat and respiration is restored
• take the victim to the nearest hospital

 
(b)(i)  SOURCES OF POTABLE WATER SUPPLY
-           tap water
-           borehole water
-           deep well water
-           spring water
-           artesian well

(ii)    USES OF WATER IN HUMAN BODY

• it serves as a medium of transporting food materials
• it aids digestion of food
• it reduces/quenches thirst
• it regulates body temperature
• it assists in the excretion of wastes products/maintains osmotic balance
• it acts as a solvent
• it aids absorption of nutrient.

 (c)     EXAMPLES OF BLOOD DISEASES
-           arteriosclerosis
-           leukaemia
-           stroke
-           coronary thrombosis
-           hypertension
-           haemophilia