Earth's magnetic field is attributed to the
A. movement of lithospheric plates at Earth's surface.
B. movement of lithospheric plates in the outer mantle.
C. flow of molten liquid in Earth's inner core.
D. flow of molten fluid in Earth's outer core.
Answer: D
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Matching
1. On the ocean life zones figure, choose the zone in which most organisms get their food from marine snow. 2. On the ocean life zones figure, choose the zone that contains the majority of all marine species. 3. On the ocean life zones figure, choose the zone that receives enough sunlight for photosynthesis. 4. On the ocean life zones figure, choose the zone that is dimly lit and contains zooplankton. 5. On the ocean life zones figure, choose the zone where coral reefs would be located.
Which of the following was a result of the Spanish-American War of 1898?
A) the American acquisition of the Lesser Antilles B) the American military defeat at Guantanamo Bay and surrender of all its Caribbean possessions to the Spanish C) the return of Cuba to Spanish rule D) The United States and Spain split Hispaniola, with Spain acquiring the Dominican Republic and the United States acquiring Haiti E) Cuban independence from Spain and the transfer of Puerto Rico to American sovereignty
A food chain is a series of organism occupying different trophic levels through which energy passes.
Answer the following statement true (T) or false (F)
In the open ocean, 1 wave in ________ will be over twice the height of the wave average
A) 23 B) 75 C) 1175 D) 50,000 E) 300,000