Transcript:
Doctor Grant: Well, in simple terms, the sun heats the Earth’s surface and the Earth radiates energy back out into Space. Some of the radiation gets trapped in the atmosphere by greenhouse gases. This trapped radiation warms the atmosphere and some of it goes back down to the Earth, making it hotter than normal. This is the greenhouse effect.
Interviewer So, is carbon dioxide the problem?
Doctor Grant: Yes, and other gases too. Methane, being released from paddy fields, commercial oil and gas from landfills, vegetation left to rot without oxygen. These days there are more greenhouse gases than ever because of human activities and especially the burning of fossil fuels.
Interviewer: What kind of problems do scientists foresee?
Doctor Grant: Well, ice caps melting and sea levels rising mean that eventually cities like London, New York, Sydney and Tokyo.
What does the speaker say are the gases contributing to green house effect?
Result:
AI explanationShows the answer. Tap to open.
Option 3: "Carbon dioxide in the atmosphere"
Explanation: This option is correct because Doctor Grant explicitly states that carbon dioxide is one of the gases contributing to the greenhouse effect. He confirms that carbon dioxide, along with other gases, is a problem due to its role in trapping heat in the atmosphere.
Option 1: "Radiation energy from Space"
Explanation: This option is incorrect because the text does not mention radiation energy from Space as a contributing gas to the greenhouse effect. Instead, it discusses how the sun heats the Earth and how some radiation is trapped by greenhouse gases, but it does not identify radiation energy itself as a gas.
Option 2: "Oxygen in the atmosphere"
Explanation: This option is incorrect as the text does not identify oxygen as a greenhouse gas contributing to the greenhouse effect. Doctor Grant specifically mentions carbon dioxide and methane, but oxygen is not included in the list of gases that trap heat in the atmosphere.
Option 4: "Methane from paddy fields"
Explanation: This option is correct as well. Doctor Grant mentions methane specifically as a greenhouse gas being released from paddy fields, indicating its contribution to the greenhouse effect. This aligns with the text's focus on human activities increasing greenhouse gas levels.
Option 5: "Gas from iced cola"
Explanation: This option is incorrect because the text does not mention any gases from iced cola as contributing to the greenhouse effect. It focuses on gases like carbon dioxide and methane, making this option irrelevant and unsupported by the text.
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