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The old factories used _______________ like coal, which created a lot of smog.
fossil fuels
To help the planet, we can use _______________, getting power from things that never run out, such as daylight and breezes.
renewable energy sources
A fridge that uses little electricity is called _______________.
energy efficient
Cars release poisonous _______________ that contributes to creating _______________, which trap heat.
exhaust fumes, greenhouse gases
_______________ in the air, which includes _______________ from cars and factories, contribute to _______________ making the Earth hotter.
Greenhouse gases, carbon dioxide, global warming
If you pick something that’s made to be _______________, you’re helping keep the environment cleaner.
environmentally friendly
Lowering the influence you have on pollution is reducing your _______________.
carbon footprint
We should invest in harvesting from rays, air currents, waves as sources of _______________ instead of depending mostly on _______________.
solar power, fossil fuels
To slow down our Earth’s warming, every country must reduce their _______________ or deal with serious _______________.
carbon dioxide, global warming
To power electrical systems using free motion from the planet you can build machinery to harness __________.
wind power
Factories and power plants must find ways to reduce their _______________ to help slow climate change.
carbon dioxide
Instead of relying on oil and gas, we should invest in _______________ that can replenish themselves naturally.
renewable energy sources
Choosing to walk or cycle instead of driving a car is a great way to reduce your individual _______________.
carbon footprint
Many countries are investing in new technologies to generate electricity from _______________ instead of burning coal.
solar power
