Which of the following shows the location of the Humbolt Current?
A) A
B) B
C) C
D) D
B) B
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Approximately how long has it been since the last magnetic reversal?
A) 1,780 years B) 17,800 years C) 780,000 years D) 1.768 million years
Some people believe the sun has become hotter and is responsible for global warming. Which observation shows that claim to be false?
A. The stratosphere cools while the troposphere warms. B. The surface temperature of the sun is projected to increase. C. Air currents at high altitude cool the sun. D. Ocean currents increase the water's ability to absorb heat. E. Air currents at low altitude cool the sun.
The transitional zone between ecosystems is called a(n) _______.
Fill in the blank(s) with the appropriate word(s).
If a rocket accelerates from rest at a rate of 50 m/s2 for 10 s, the distance it will cover during this time is about
A) 250 m. B) 500 m. C) 2500 m. D) 5000 m. E) none of the above