Natural Forces

1. Helen: The temperature in our city reached 45 degrees Celsius yesterday. It is the hottest summer in history! Tom: That is because of greenhouse gases in the atmosphere. They trap the sun's heat like a glass roof. According to Tom, why are summer temperatures rising so much?

• ABecause of heavy rain and storms
• BBecause greenhouse gases trap the sun's heat
• CBecause people are planting more trees in cities
• DBecause factories are closed during summer holidays

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2. Deforestation is the permanent removal of trees to make room for agriculture or housing. It has devastating effects on the environment. Trees produce oxygen and absorb carbon dioxide. When trees are cut down, carbon dioxide levels in the atmosphere rise, which worsens global warming. Furthermore, animals lose their natural habitats, which leads to extinction. According to the text, how does cutting down trees affect the atmosphere?

• AIt increases oxygen levels.
• BIt decreases greenhouse gases.
• CIt increases carbon dioxide levels.
• DIt cools down the Earth's temperature.

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3. Look at the waste recycling statistics of a school over four months: - March: Paper (50 kg), Plastic (30 kg), Glass (20 kg) - April: Paper (65 kg), Plastic (45 kg), Glass (35 kg) - May: Paper (80 kg), Plastic (50 kg), Glass (40 kg) - June: Paper (40 kg), Plastic (20 kg), Glass (10 kg) According to the statistics, which of the following is correct?

• AThe school recycled more plastic than paper in March.
• BThe school recycled less plastic in May than in April.
• CJune was the most productive month for recycling.
• DThe amount of recycled glass was lowest in June.

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4. Clara: There was a massive landslide in the mountain village yesterday. David: Oh, that's terrible! Did it cause any damage? Clara: Yes, the soil slid down and blocked the main road. Fortunately, nobody was injured. According to Clara, what was the result of the landslide?

• AThe main road was blocked by the sliding soil.
• BMany villagers were badly injured.
• CThe river overflowed and flooded the village.
• DA volcanic eruption destroyed the houses.

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5. When carbon dioxide and other greenhouse gases accumulate in the atmosphere, they act like a blanket that traps the sun's heat. This leads to a gradual increase in global temperatures, which is known as ---.

• Alandslide
• Bwater shortage
• Creforestation
• Dglobal warming

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