The dissolved oxygen content in water
Corynebacterium is the answer I believe
The region that would be eroded the most would be those at the slopes of the mountain. When heavy rainfall comes, the soil in these regions gets soften thus being forced down forming a run-off due to the force of gravity. These eroded soil would eventually continue to the valleys thus causing landslides.
they are called
pseudopodia
hope it helped :)
