Tarun falls ill with a cold. The cold virus is in his body, and he has also been eating little for…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
Tarun falls ill with a cold. The cold virus is in his body, and he has also been eating little for weeks and sleeping in a crowded room. Sort these into immediate and contributory causes.
Need a reminder? The key ideaShow
Most diseases have an immediate cause, usually a microbe, and contributory causes such as poor nutrition, unclean surroundings, crowded homes, harmful habits and inherited traits. Infectious diseases are caused by microbes and can spread; non-infectious diseases such as cancer and high blood pressure have internal causes.
The worked solution
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Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. The immediate cause. The cold virus. It directly brings on the cold.
Step 2. The contributory causes. Eating little, which is poor nutrition, and sleeping in a crowded room. They weaken his body and help the virus to spread.
Answer: immediate cause: the virus. Contributory causes: poor food and the crowded room.
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