Within water-deficient regions, two climatic types are recognized. What are they?
A) Subpolar high and subpolar low
B) Ephemeral and playa
C) Desert and steppe
D) Saltation and tropical
Answer: C
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At point D, is the pressure rising or falling? Why?
The question is based on this hypothetical weather map in the Northern Hemisphere showing isobars and the positions of a cold front and a warm front (top of map is north). Six locations are marked on the map (points A, B, C, D, E, and F). A cross-section diagram along points A, B, C, D, E, and F is shown below the map.
What will be an ideal response?
Why is iron not abundant in the ocean?
A) It is trapped in the Earth's crust. B) It is held in sediments. C) It is nearly insoluble in oxygenated water. D) It is not very reactive.
The 98th meridian marks an important biophysical mark in North America for this biome where increasing aridity produces vegetation of a distinctly different height
A) Midlatitude grassland B) Desert C) Mediterranean shrubland D) Midlatitude broadleaf and mixed forest
Which numbered area on this geologic map of North America consists of recently added tectonic terranes?
A. 1, southern Alaska B. 2, continental platform of west-central Canada C. 3, continental shield of eastern Canada D. 4, coastal plain along the Gulf Coast of the U.S.