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