Landslides and avalanches are the most dramatic, sudden, and dangerous examples of earth materials moved by gravity. Landslides are sudden falls of rock, whereas avalanches are sudden falls of snow.
I believe it is A. Mountain range
(Correct me if I'm wrong)
Explanation:
<h3>These include the chemical, cellular tissue, organ, organ system and the organism level. </h3>
An island is a piece of land surroinded by water. Hawaii and The Keys are examples
