I need help putting the words in each line, can only use 1 word once.

During a fierce storm a large number of tall trees on an island are uprooted by the wind and die. most of the trees on the island are now short trees and produce seeds that grow into short trees. what concept is shown in this example? question 5 options: natural selection artificial selection genetic engineering gene splicing

The smallest parts of these that retain their original properties are called

What is the most common structure of volcanoes?