Volcanic eruptions under ice sheets are a recent phenomenon caused by global warming.

If you simply memorize the answers above, you risk failing if the test uses a different version of the "Ice and Fire" passage. Here is the logic behind the answers.

The text might say "Volcanoes could cause melting," while the question says "Volcanoes always cause melting." This would be False because of the absolute wording. 3. Summary Completion

Read the first sentence of each paragraph to grasp the main idea (e.g., historical vs. modern firefighting).