revision social final 2

When food chains are put together, they make a ..................

• ecology

• food web

• food chain

The main reason biodiversity is being destroyed is ................. loss.

• habitat

• producers

• energy

...................is the increase in the average temperature of the earth.

• Erosion

• Rainforests

• Global warming

Many ...................have great knowledge about their local environment and know how to use forests in a sustainable way.

• community forest

• sacred forest

• rainforest

.........................'s teak is famous because the quality is very high, strong and beautiful type of wood.

• Myanmar

• China

• Thailand

Many people destroy rainforests for ................because they want to use the soil.

• agriculture

• development

• commercial

The earth goes around the sun but its............is not always circular.

• volcanoes

• orbit

• climate

................reduces the amount of trees on the earth, and therefore reduces the absorption of carbon dioxide.

• Deforestation

• Reforestation

• Mitigating

Some scientists estimate that deforestation is responsible for ................of global warming.

• 10-40%

• 20-30%

• 30-50%

The ice cap at the north pole is decreasing by..................every ten years because of global warming.

• 9%

• 15%

• 40%