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100
By the late twentieth century what city was most populated.
What is Mexico City?
100
Global Warming is.
What is a gradual increase in the temperature of earth's surface?
100
Name two types of resources.
What is non renewable, and renewable resources?
100
A space station.
What is a large satellite sent into space?
100
The Green house effect is.
What is radiation that warms the earth?
200
Who is Mother Teresa.
What is a Roman Catholic nun who wanted to help the poorest people?
200
Carbon dioxide and other gasses trap _____ from the earth.
What is heat?
200
energy source we use most.
What is petroleum/oil?
200
NASA stands for.
What is national aeronautics and space administration?
200
What is pollution.
What is making the environment dirty?
300
A city region with 10,000,000 people is called.
What is a mega city?
300
How many people visit Antarctica per year.
What is 15,000?
300
What was George W. Bush's campaign for in 2001.
What is self-sufficiency?
300
Who helped lead the way in the AIDS research.
Who is Flossie Wong-Staal?
300
What is the term when just enough babies are born to balance out population loss.
What is zero population growth?
400
What nation has the most population growth.
What is China?
400
Deforestation Is.
What is farmers have to cut down trees to plant crops?
400
What 2 animals live on Antarctica.
What are penguins and scientists?
400
Iguacu Falls is on what 2 borders.
What is Argentina and Brazil?
400
Demographers are.
What is scientists who study population trends?
500
How many people are homeless, and were do they live.
What is 600,000, and they live in the streets?
500
Who wrote silent spring and what did they say about mornings becoming silent.
What is Rachel Carson, "Early mornings are strangely silent where once they were filled with the beauty of bird song"?
500
What is nuclear fusion.
What is atoms are combined instead of split?
500
What is the process called when fertile land has been lost?
What is desertification.
500
Congress passed laws to protect what type of animals.
What is endangered animals?
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