Quiz 18: Global Impacts, Part 1
How much of the Amazon forest might be lost to just a 2°C increase in global temperatures?
20%
How much of the water that irrigates the Amazon forest actually comes from the plants themselves?
25-35%
At what values of atmospheric CO2 may some coral reefs actually begin to dissolve?
560 ppm
Severe coral bleaching occurs when DHW values exceed
8
Which of the following regions of the United States will NOT likely face a water crisis?
Northeast
One degree heating week (DHW) is
One week of sea surface temperature 1°C above summer maximum
What percentage of the world's population live within 100km of a coral reef and are dependent on its survival?
NOT 25%
Which ions are critical in the formation of sea shells?
NOT Carbonate,Hydrogen
What has happened to coral in the previous two decades during La Niña events?
NOT Severe bleaching
Which of the following events does NOT typically result in coral bleaching?
NOT: El Niño, Sudden rise in water temperature
How well has Bangladesh responded to the threat of climate change?
NOT: Not effectively
Which of the following is NOT considered to be a major factor in determining the impact of climate change?
Natural variation
How much is ocean water pH expected to change this century?
0.3-0.5
How many years has the Amazon Rainforest been fundamentally intact?
1,000,000 years
The United Nations has projected that this fraction of the world's population will experience water stress by 2025.
2/3
The technical resources needed by a community to respond to climate change is known as
Adaptive capacity
Which of the following uses the most freshwater?
Agriculture
Which of the following ecosystems is most vulnerable to even minor climate change?
Amazon Rainforest
The sum total of all living organisms on the planet is known as
Biosphere
What happens to ocean water pH values when humans emit carbon dioxide into the air?
Decreases
Where in the Middle East is salt water intrusion into freshwater aquifers potentially the most damaging?
Gaza
Which of the following accounts for most of the world's water supply?
Ground water
Which of the following is NOT true about the Great Barrier Reef?
It is at least 45 million years old.
Which of the following are a cause for concern about Amazon deforestation? Choose all that apply.
Loss of plant and animal species Loss of potential cures for disease Loss of communities that have never seen the outside world
Today the ocean water pH is changing faster than it has at any time in this many years:
NOT 100,1,000
Which region of the world is warming the most rapidly?
Polar
Why is it difficult for poorer nations to cope with climate change? Choose all that apply.
Poverty Political conflict Corruption
Which of the following is usually found in acidic ocean water?
Red algae
Which of the following is NOT a keystone species?
Salamander
What is true about trees in higher latitudes?
Trees are migrating northward
How much less precipitation is southern Europe projected to experience this century?
not 20%
