Which is not an example of an earth system cycle?
a.
seasons
b.
tsunamis
c.
food web
d.
day and night

 b.  tsunamis

Explanation:

The earth system cycle includes the cycle which involves the circulation of materials and energy, changes in the seasons, temperatures, humidity and day and night cycle.

Tsunamis is not the part of the earth system cycle. A tsunami is a natural process. In this a high speed tidal wave generated in oceanic water due to the effect of high speed wind current. The earthquakes, underwater explosion and volcanic eruptions can be responsible for generation of tsunamis.

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