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Mr. Breitsprecher's Online Lessons & Reviews                    Click on a circle with your mouse. Scroll down for the next question and to score your work..
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1. To learn about how dinosaurs lived, we would need to:

    Talk to them.
    Read their books.
    Observe them.
    Find cities where they lived and look at the buildings that they made.
 

2. Paleontologists study:

    Old life forms.
    Lets light through
    Blocks Light
    Is porous and lets water through
 

3. Scientists believe the earth was formed about:

    A few million years ago.
    4.6 billion years ago.
    A few hundred years ago.
    Too long ago to even imagine.
 

4. Scientists believe that land plants and fish appeared on earth about:

    425 million years ago.
    300 years ago.
    500 billion years ago.
    Too long ago to even imagine.
 

5. Scientists believe that humans appeared on the earth about:

    in 1742, when Columbus discovered America.
    Billions and billions of years ago.
    1 hundred years ago.
    1 million years ago.



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