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KOA 1

Questions x answers

QuestionAnswer
What is the atmosphere? The atmosphere is all the gases surrounding the Earth.
What is the lithosphere? The lithosphere is the solid outer layer of the Earth, including rocks and soil.
What is the biosphere? The biosphere includes all living organisms on Earth.
What is the hydrosphere? The hydrosphere is all the water on Earth, such as oceans, rivers, lakes, and ice.
How long were Earth’s natural systems in balance? For millions of years.
What did humans begin to do after appearing on Earth? They adapted and started changing the environment for their own comfort.
What is the greenhouse effect? A natural process where gases like carbon dioxide trap heat from the Sun.
Why is global warming happening? Human activity increases greenhouse gases and makes Earth’s blanket too thick.
What produces large amounts of carbon dioxide? Burning fossil fuels such as coal, oil, and natural gas.
What happens when polar ice caps and glaciers melt? Sea levels rise.
What extreme weather events are becoming more frequent? Heatwaves, severe droughts, and floods.
How does global warming affect ecosystems? It damages ecosystems and causes loss of habitats.
Name one solution to global warming. Use renewable energy sources.
Where is the ozone layer located? About 20–30 km above the Earth’s surface.
What does the ozone layer protect us from? Harmful ultraviolet (UV) radiation.
What chemicals damaged the ozone layer? CFCs (chlorofluorocarbons).
Where were CFCs commonly found? In old refrigerators, spray cans, and air conditioners.
What appeared when CFCs broke down ozone molecules? Ozone holes.
Where were ozone holes most common? Over Antarctica and Australia.
What are two effects of increased UV radiation? Higher risk of skin cancer and eye cataracts.
How was the ozone layer protected? Dangerous CFCs were banned globally.
What agreement banned CFCs? The Montreal Protocol.
Is the ozone layer recovering today? Yes, it is slowly recovering.
Why are rainforests important? They produce oxygen, store carbon, and contain huge biodiversity.
What is the main reason forests are cleared? Agriculture and timber production.
Name one agricultural activity causing deforestation. Cattle farming.
What happens to species when forests are destroyed? They lose their habitat and may face extinction.
What environmental problem does deforestation increase? Soil erosion and flooding.
How does deforestation accelerate climate change? Without trees, more CO₂ stays in the atmosphere.
Name one solution to deforestation. Protect existing forests.
What is reforestation? Planting new trees in deforested areas.
How can consumers help reduce deforestation? By choosing sustainable products.
Created by: smirousova
 

 



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