How much of the world’s oxygen is produced by just the Amazon rainforest?
1%
10%
20%
5%
How much oxygen does an average 50-year-old tree provide?
Enough for 10 people a year
Enough for 4 people a year
Enough for 1 person a year
Enough for 8 people a year
Which land-based ecosystem holds the most concentration of plants and animals, i.e. biodiversity?
African savannah
South Pacific islands
Coral reefs
Tropical forests
How many people in the world are dependent on fish as their main source of daily protein?
2 out of every 10 people
1 out of every 10 people
8 out of every 10 people
3 out of every 10 people
What uses the most energy in U.S. homes each year?
Heating water
Heating and air-conditioning
Refigeration
Lighting
Which of these species are threatened by global warming?
Koala
Arctic fox
All of the above
Clownfish
When was the first Earth Day?
1999
1982
2003
1970
In the average home, which of the following uses the most water?
Filling the bathtub
Flushing the toilet
Taking a 10-minute shower
Washing a load of clothes
Which of the following takes the longest time to break down or disintegrate?
Disposable diaper
Hard plastic container
Plastic 6-pack holder
Aluminum can
