Q. Consider the following statements:

1. In the temperate zones of the Northern Hemisphere, the eastern edges of continents tend to be warmer than the western edges.
2. The major circulation pattern in the atmosphere is an east-to-west flow; there is very little north or south movement of air.
3. Geological features, as well as atmospheric and oceanic circulation patterns, help determine where biomes occur.
4. Most of the great deserts lie between 40° and 60° north or south latitude.

Which of the above statements is / are correct?
Answer: Only 3
Notes: Statement 3 is correct: Location of biomes is influenced by geological, atmospheric, and oceanic patterns. Statement 1 is incorrect; in the Northern Hemisphere’s temperate zone, western continental edges are typically warmer due to ocean currents. Statement 2 is incorrect; the main atmospheric circulation is west-to-east. Statement 4 is incorrect; most great deserts are located between 20° and 30° north or south, not 40° to 60°.