More than half of the breathable oxygen in the world comes from where?
The ocean
Flowering plants
Forests
Clouds
How much of the world’s oxygen is produced by just the Amazon rainforest?
1%
5%
20%
10%
How much oxygen does an average 50-year-old tree provide?
Enough for 4 people a year
Enough for 1 person a year
Enough for 10 people a year
Enough for 8 people a year
Which of the following ailments can be treated by prescription drugs derived from plants found in the rainforest?
Cancer
All of the above
Asthma
Hypertension
Around the world, how many Indigenous people live in forests?
8 million
1 million
5 million
50 million
Which land-based ecosystem holds the most concentration of plants and animals, i.e. biodiversity?
Coral reefs
South Pacific islands
African savannah
Tropical forests
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
2 out of every 10 people
1 out of every 10 people
Which of these items can be composted, or turned into natural fertilizer, for your garden?
Egg shells
Aluminum foil
All of the above
Gold balls
What uses the most energy in U.S. homes each year?
Heating and air-conditioning
Refigeration
Lighting
Heating water
Which of these species are threatened by global warming?
Arctic fox
Koala
All of the above
Clownfish
Paper can be made from which of these materials?
Panda excrement
Wood
Hemp
All of the above
True or false? The average American generates more than four pounds of trash per day.
True.
When was the first Earth Day?
2003
1982
1999
1970
What percentage of crops are dependent on bee pollination in the U.S.? Bao nhiêu phần trăm cây trồng phụ thuộc vào sự thụ phấn của ong ở Hoa Kỳ?
65%
30%
100%
90%
Which of the following uses the most water? Cái nào sau đây sử dụng nhiều nước nhất?
Washing a load of clothes
Filling the bathtub
Taking a 10-minute shower
Flushing the toilet
Which of the following takes the longest time to break down? Cái nào sau đây mất nhiều thời gian nhất để phân hủy?
Hard plastic container
Aluminum can
Disposable diaper
Plastic 6-pack holder
