Sustainability/environment questions!

Which gas pollutes the most?

• Nitrogen oxides

• Hydrogen

• Carbon Dioxide

  
  

• Krypton

Every year, approximately how much plastic is produced?

• 200 million tonnes

  
  

• 400 million tonnes

• 
  2 billion tonnes

• 3 billion tonnes

  
  

Vegetables produce the most greenhouse gas emissions.

• True

  
  

• False

About 10 percent of the world’s electricity comes from coal-fired power stations.

• True

  
  

• False

How many layers surround the earth?

• 6

• 4

• 7

• 5

What is the percentage of forest on Earth?

• 34%

• 43%

• 31%

• 52%

Birds and animals are the examples of abiotic environment.

• True

• False

What is the largest contributor to greenhouse gases?

• Heat

• Electricity

• Fossil fuels

How long does it take for a plastic bag to decompose?

• Millennium (1000 years)

• Decade (10 years)

• Century (100 years)

How long does it take for a plastic toothbrush to decompose?

• 200-300 years

  
  

• 400 years

• 450 years

• 350 years