The first fish evolved about 50 million years ago
a. True
b. False
False
Environmental & Atmospheric Sciences
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Why is the hypothetical pattern seen here?
What will be an ideal response?
Environmental & Atmospheric Sciences
The type of rock shown in this photograph is
A. shale. B. breccia. C. sandstone. D. conglomerate.
Environmental & Atmospheric Sciences
Where are tornadoes most common?
A. North Africa B. the U.S. C. Brazil D. Australia
Environmental & Atmospheric Sciences
Which of Earth's major extinctions was the most extensive, eliminating 70 percent of all terrestrial organisms and up to 95 percent of marine organisms?
A) Cambrian Explosion B) Permian Extinction C) Cretaceous Extinction D) Late Devonian Extinction
Environmental & Atmospheric Sciences