This Russian physiographic region is flat, contains extensive wetlands, and tens of thousands of small lakes
A) Urals
B) Central Siberian Plateau
C) Russian Plain
D) West Siberian Plain
E) Mountain Rim
Answer: D
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The surface of this planet is obscured by an atmosphere of thick clouds and toxic gases. What planetary body is it?
A. Mars B. Mercury C. Earth's moon D. Venus E. Earth
The Spanish urban system is dominated by
A) two cities of national scope (Madrid and Barcelona). B) coastal cities (Bilbao, Valencia, Malaga). C) the European Union. D) Basque nationalists. E) cities built around tourism and leisure activities.
Although many areas of the continental shelves are relatively featureless, there are some locations on the shelves that have received extensive glacial deposits and significant dissection by streams. How would this have been possible?
A) Glaciers and streams were powerful enough to shape the shelf underwater. B) The shelves were once above sea level but have since dropped below sea level due to tectonic activity. C) The sea level dropped during the last glacial episode because water was stored in large ice sheets, exposing the shelves. D) As the continents collided in the past, the shelves were lifted above sea level and became exposed to the elements.
If the total global production of grains cannot be significantly increased in the next 50 years, and the human population continues to increase, one strategy to feed people would be to ________
A) greatly reduce the amount of meat in our diets B) engineer plants that can grow without sunlight C) increase our use of fossil fuels in agriculture D) increasingly rely on fungi for nutritional needs