Unit 5: Global warming

Words in this game

• atmosphereThe atmosphere around the Earth protects us.
• carbon dioxideCars release carbon dioxide into the air.
• climate changeClimate change is a problem for the whole world.
• coalSome power stations burn coal to make electricity.
• deforestationDeforestation destroys the homes of many animals.
• droughtThe long drought left the farmers without water.
• ecosystemA forest is an ecosystem with many living things.
• emissionWe must reduce the emission of harmful gases.
• floodThe flood covered the streets with water.
• fossil fuelOil and coal are fossil fuels.
• global warmingGlobal warming makes the Earth hotter every year.
• greenhouse gasGreenhouse gas keeps heat near the Earth.

Questions

1. If we plant more trees, the air ___ cleaner.

   • became
   • has become
   • will become
   • would became
   Show answer

   will become

2. If I were the mayor, I ___ more bike lanes.

   • am building
   • build
   • will build
   • would build
   Show answer

   would build

3. Factories ___ harmful gases into the air.

   • cut down
   • give off
   • look after
   • take in
   Show answer

   give off

4. Global warming leads ___ more floods and droughts.

   • for
   • of
   • to
   • with
   Show answer

   to

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