Humans evolved during the ________ Epoch of geologic time
Fill in the blank(s) with correct word
Pleistocene
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An electron vibrating at 1000 times per second generates an electromagnetic wave with a
A. period of 1000 s. B. speed of 1000 m/s. C. frequency of 1000 Hz. D. wavelength of 1000 m.
What is the range from each of the past 3 years to the next year? Compare the range within years to the range between years. For example, compare the changes in CO2 levels in 2010 to the change from 2010 to 2011.
What will be an ideal response?
Which of the following is not an aspect of globalization?
A. spread of ideas, technologies, and diseases B. migrations of people for work, political asylum, and tourism C. a folk festival that has taken place in your town for fifty years D. spread of images and messages through the media of TV, film, the Internet, and print
________ are the most common materials precipitated as cement, which binds loose particles of sand into a solid sedimentary rock.
A. Feldspar and calcite B. Calcite and silica C. Clay and silica D. Silica and hematite E. Calcite and fluorite