different between avalanches vs tsunamis

avalanches

avalanches From the web:

• what avalanches mean
• what avalanches cause
• avalanches what can i do
• avalanches what are they
• avalanches what does it mean
• avalanches what do they do
• what triggers avalanches
• what causes avalanches and landslides

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tsunamis

tsunamis From the web:

• what tsunamis have happened
• what tsunamis look like
• what tsunamis do
• what tsunamis cause
• what tsunamis can do
• what tsunamis dangerous
• what tsunamis occur
• tsunamis what do they do