the world Our planet is our word. the environment We want to protect the environment. environmental protection Environmental protection is very important. earth There is only one earth. nature Nature is our living space. plants We need plants to live. animals Many animals are threatened by extinction. the sea Many animals live in the sea. plastic Plastic in the sea threatens animals. waste We must avoid waste. waste separation Waste separation contributes to environmental protection. exhaust fumes Exhaust fumes pollute the air. co2 Vehicles and industry cause co2. to warm up CO2 warms up the atmosphere. greenhouse greenhouse effect CO2 causes the greenhouse effect. scientists Scientists say: “Climate is changing.” to melt The ice on the poles is melting. sea level The sea level is rising. glacier Many glaciers have disappeared permafrost The permafrost is thawing. methane The thawing process sets methane free. meat The production of meat also sets methane free. less We must eat less meat. climate change Methane speeds up climate change. chain reaction Climate change is a chain reaction. tipping point When the tipping point is reached the chain reaction starts. drought Droughts threaten humans, animals and plants. renewable energie Wind power and solar power are renewable energies. carbon power nuclear power What do you think about carbon power and nuclear power? means of transport Which means of transport are environmentally friendly? need What do we really need? earth The earth is going to change.