Which of the following is an example of a natural emission?

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Study for the Cambridge Science – States of Matter Test. Prepare with flashcards and multiple choice questions, with hints and explanations for each question. Ready yourself for your exam!

Multiple Choice

Which of the following is an example of a natural emission?

Explanation:
Natural emissions come from natural processes in the environment rather than human activity. Volcanoes release gases like sulfur dioxide directly into the atmosphere as part of their eruptions, so sulfur dioxide from volcanic activity is a natural emission. In contrast, the other options come from human activities—cars burning fuel, engines releasing pollutants, and smelting producing particulates. Those are examples of emissions driven by human processes, not natural ones.

Natural emissions come from natural processes in the environment rather than human activity. Volcanoes release gases like sulfur dioxide directly into the atmosphere as part of their eruptions, so sulfur dioxide from volcanic activity is a natural emission. In contrast, the other options come from human activities—cars burning fuel, engines releasing pollutants, and smelting producing particulates. Those are examples of emissions driven by human processes, not natural ones.

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