Erosion
Corrosion
Something that invades and eats away at something is something that causes erosion and corrosion.
しんしょく
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
木々を切り倒すことで、土壌の侵食が引き起こされることがあります。
Chopping down trees can cause soil erosion.