Which system is partly natural and partly human-made?
Understand the Problem
The question is asking which of the provided options represents a system that is both natural and human-made. The user is likely looking for a specific example that fits the criteria given.
Answer
A coral reef that grows on old train cars.
The final answer is a coral reef that grows on old train cars.
Answer for screen readers
The final answer is a coral reef that grows on old train cars.
More Information
Coral reefs often grow around shipwrecks and other human-made structures, using them as a foundation.
Tips
Avoid confusing purely natural or purely human-made systems with those that are a combination.
Sources
- PSSA Grade 4 Science - Item and Scoring Sampler (2018) | Quizalize - resources.quizalize.com
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