Hurricanes are a complex phenomenon that is influenced by a variety of physical factors, such as SSTs, wind shear (剪应力), water vapor, and atmospheric stability. In the Atlantic and Pacific hurricane formation regions, hurricane intensity is not only determined by the increasing SSTs, which, though, are likely to be one of the most significant influences.

Help:

investigate v. to examine something carefully, especially to discover the truth 深入研究

intensity n. the quality of being felt very strongly or having a strong effect强度

True (T) or False (F):

1. In a way, greenhouse gases are blamed for the increasing SST.

2. Any pollutant can be seen as one cause of a rise in SST.

3. In Toms opinion, human influence is closely linked to the increasing SST.

4. SSTs are one of physical factors which influence hurricanes.

(Key: 1-4 TFTT)

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