EVERYDAY SCIENCE - BODY SYSTEMS
Question 1

Singapore experiences air pollution in the form of haze from time to time. There are fine particles in the air during the haze. When breathed in, these fine particles are harmful to our body as they can cause respiratory problems and worsen conditions of existing heart or lung disease.

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Answer 1

Fill in the blanks with the keywords provided below.
[faster rate] • [respiration] • [oxygen] • [respiratory] • [harmful particles] • [more energy] • [circulatory] • [breathing rate]

a) Which two body systems work together to take in oxygen and transport it to the rest of the body?

Answer:

They are the system and the system.


b) Even though the classroom lessons in schools are ongoing as usual, outdoor physical education lessons are cancelled during the hazy periods.
Explain why it is not advisable to exercise during the haze.

Answer:

When exercising, our cells need to carry out at a to release . There is a need to breathe faster to take in more air containing . When we exercise during the haze, with a faster , we are taking in more from the air.




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“Smoking is much more harmful than breathing in haze! A person will take in about 10 to 40 times more fine particulate matter when consuming 1 cigarette compared to staying outdoors the whole day when the air quality is in the unhealthy range.”

https://www.straitstimes.com/opinion/its-the-tiny-things-in-the-haze-not-its-look-or-smell-that-matter