The earliest fossils of the Homo species are 2.5-1.6 million years old
a. True
b. False
True
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What is the main feature of metallic bonding, and what properties result from this main feature? What will be an ideal response?
Compared to cyclones, anticyclones are
A) wetter. B) of shorter duration. C) more cloudy. D) windy. E) none of the above
During floods a stream may leave its current channel and take a new lower-elevation course and form a new channel in a process known as ________.
A. avulsion B. riveting C. delusion D. funneling E. braiding
Which of the following statements is NOT true regarding the Earth system?
A. Earth's life forms are dependent on the system. B. It is dynamic and interactive. C. It is affected by other bodies in the solar system. D. Humans are not capable of affecting the system. E. It consists of several sub-systems.