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Q.1 | Q.2 | Q.3 | Q.4 | Q.5 | Q.6 | Q.7 | Q.8 | Q.9 | Q.10 |
Q.1 |
A family composts their food waste regularly. Which environmental benefit is directly linked to this practice? |
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Q.2 |
A local community organises a recycling event. They provide separate collection bins for paper, plastic, glass, and electronic waste. Which of the following actions is appropriate at the event? |
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Q.3 |
In a household aiming for water conservation, different practices are being considered to minimise water usage. |
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Q.4 |
A city is experiencing a heat wave, and the local power plant is struggling to keep up with the increased demand for electricity. The power plant is considering burning more fossil fuels to generate more electricity. However, the burning of fossil fuels releases carbon dioxide into the atmosphere, which contributes to climate change. |
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Q.5 |
While exploring climate change's impact on ocean health, a group of students identified a process significantly contributing to ocean acidification. What aspect of climate change primarily leads to the acidification of the ocean, affecting marine organisms? |
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Q.6 |
In the heart of a lush, sprawling forest, lived Kora the Koala. She was known for her love of eucalyptus leaves and her cozy tree-dwelling lifestyle. However, one fateful day, an unexpected event disrupted her serene life. |
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Q.7 |
In an experiment, researchers compare the environmental impact of two vegetable farming methods. Which data would be most relevant to assess their sustainability? |
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Q.8 |
Sarah is concerned about the chemicals used in water treatment. What are some of the potential drawbacks of using chlorine for disinfection? |
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Q.9 |
During a marine biology field trip, Emma and her classmates explored a tidal ecosystem. They observed the diverse life forms thriving in the area, including decomposers breaking down organic matter. |
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Q.10 |
A municipality has been experiencing outbreaks of waterborne diseases due to the presence of harmful microorganisms in its water supply. |
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Answers to Previous Year Questions from CREST Olympiads:
Q.1 : c | Q.2 : b | Q.3 : c | Q.4 : d | Q.5 : c | Q.6 : c | Q.7 : d | Q.8 : d | Q.9 : b | Q.10 : d