4. this photograph was taken in 2004, 24 years after mount saint helens erupted. compare and contrast this photo with the previous three. what changes do you see in the biotic and abiotic factors? does anything surprise you about this series of photographs?

The eruption of Mount Saint Helens has proved to have dramatically change the abiotic and biotic factors of its environment. As what was shown in the image just  24 years from its eruption, we can already observe that animal life began to populate the region due to its sufficient vegetation.

4) repetitive change