Which of the following is not correct?

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Q: 34 (CDS-I/2004)
Which of the following is not correct?

question_subject: 

Geography

question_exam: 

CDS-I

stats: 

0,28,23,9,5,28,9

keywords: 

{'destructional activity': [0, 0, 1, 0], 'destructional activity ofwaves': [0, 0, 1, 0], 'depositional activity': [0, 0, 2, 0], 'landslide accumulation': [0, 0, 1, 0], 'constructional activity': [0, 0, 1, 0], 'lava plains': [0, 0, 1, 0], 'dunes': [1, 0, 0, 0], 'soil movement': [0, 0, 1, 0], 'creater lakes': [0, 0, 1, 0], 'volcano eruption': [0, 0, 1, 0], 'loess plains': [0, 0, 1, 0], 'sea cliffs': [0, 0, 1, 0], 'wind': [1, 0, 1, 2]}

The correct option is 3. The statement in option 3 is not correct. Constructional activity of soil movement does not produce landslide accumulation. Landslide accumulation is a result of destructive activity caused by gravitational forces when unstable soil, rock, or debris slide down a slope.

Let`s examine the other options to understand why they are correct or incorrect:

1. Destructional activity of waves producing sea cliffs is correct. Waves crashing against coastal cliffs erode the rock over time, leading to the formation of sea cliffs.

2. Depositional activity of wind producing loess plains and sand dunes is correct. When wind transports and deposits fine sediment like silt or sand, it can form large plains of loess soil or create sand dunes.

4. Destructional activity of volcano eruption leading to lava plains and crater lakes is correct. Volcanic eruptions can release lava, which flows and solidifies to form plains. The depression left behind after a volcanic eruption can also fill with water to create crater lakes.

In summary, option 3 is not correct because landslide accumulation is a result of destructive activity caused by gravitational forces, not constructional activity.