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