This photograph was taken in 1994, 14 years after Mount Saint Helens erupted. Compare and contrast this photo with the previous two. What changes do you see in the biotic and abiotic factors?
Without the provided photograph or information about the previous two photographs, it is not possible to compare and contrast the differences in the biotic and abiotic factors. However, one can make general assumptions about the changes that might have occurred in the 14 years after the eruption of Mount St. Helens.
Abiotic factors such as the landscape and geological features might have changed significantly. It is likely that there would have been extensive damage to the vegetation and habitat due to the eruption. The land might have undergone various stages of recovery, including the growth of new vegetation and colonization by different species. The presence of volcanic ash and decline in soil fertility may have affected the plant and animal life in the area.
In terms of biotic factors, it is possible that there would have been a shift in the dominant species and the overall biodiversity of the area. It would have taken time for new plant life to establish itself and for animal populations to recover. Over time, the ecosystem would have slowly adapted and diversified, with new species colonizing the area and potentially displacing others.
Again, without specific information or photographs to reference, it is difficult to provide a detailed analysis of the changes in the biotic and abiotic factors in the area affected by Mount St. Helens eruption.