intermittent, occurring at irregular intervals; not continuous or steady, such as renewable energy that depends on weather conditions, co2 emissions, carbon dioxide gases released into the atmosphere, primarily from burning fossil fuels, contributing to global warming, fossil fuels, energy sources formed from the remains of ancient plants and animals, including coal, oil, and natural gas, sustainable, able to be maintained without harming the environment or depleting resources for future generations, climate change, long-term changes in temperature and weather patterns on Earth, often linked to human activities, renewable sources, natural resources that can be replaced or replenished over time, such as solar and wind energy, finite source, a resource that has a limited supply and will eventually run out, like oil or coal, environmental desctruction, serious damage caused to nature, which can harm ecosystems and wildlife.

Unit 9

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恢復自動保存: ?