Previous Year Questions
Practice Questions
Browse and practice real questions from previous scholarship exams. Use filters to narrow down by year, subject, or exam.
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Q. 482
According to the 10% law of energy transfer in a food chain, if producers have 1000 units of energy, how much energy is available to the primary consumers?
Q. 483
What are organisms called that can produce their own food using sunlight, such as green plants?
Q. 484
What is the process called by which excessive nutrients (like from fertiliser runoff) cause dense growth of algae in a water body, depleting oxygen?
Q. 485
What term describes materials that can be broken down by natural biological processes (e.g. by bacteria)?
Q. 486
What are the three R's commonly promoted to conserve natural resources and manage waste?