Gene sequence data revealed that birds are more closely related to ________ than to ________.
Fill in the blank(s) with the appropriate word(s).
Answer: crocodiles, snakes
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Since the burning or decomposition of trees releases carbon dioxide, deforestation can be considered a source of the greenhouse gases.
Answer the following statement true (T) or false (F)
Which of the following is NOT a criteria air pollutant?
A. sulfur dioxide B. Ozone C. particulate matter D. Volatile organic compounds
The carbon cycle is an example of how materials are cycled through ecosystems.
Answer the following statement true (T) or false (F)
The Great Rift Valley of East Africa is characterized by ________.
a.) mainly thrust faulting as Africa collides with Arabia b.) mainly transform faulting along zones connecting the rift with the Red Sea c.) mainly anticlinal and synclinal folding as Africa collides with Madagascar d.)mainly normal faulting as East Africa begins to fragmen