Choose the best answer.

In the United States, fossil fuels were the main source to ______ about 60% of total electricity generation in 2020.

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Dams and reservoirs are required ______ to store water during periods of surplus water availability.

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Climate scientists are discussing the ______ of the Amazon rainforest deforestation.

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Energy plays a key role for ______ development of a country.

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The use of biofuels helps to achieve energy ______ as it helps reduce the dependence on foreign oil for some countries.

Choose the word CLOSEST in meaning to the underlined part.

The ASG (ASEAN School Games) aims to establish and strengthen friendships among students in the ASEAN countries.

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Emma and Trung are discussing the activities for their group project.

Emma: “Well, what we need to do is to start a 3Rs campaign?”

Trung: “______ 3Rs?”

Emma: “Ah, it’s Reduce - Reuse - Recycle.”

Choose the best answer.

Fossil fuels like coal, oil and natural gas account for 81% ______ the total energy used in the USA.