Simplify the following text for a Grade 6 native English-speaking person.
Original: In many districts where such woods once existed , they have been replaced by the Scots pine and Norway spruce , which are less sensitive to the ravages of goats who are the worst enemies of such trees .
Simplified: Where such woods were , Scots pine and Norway spruce now grow . These trees are less sensitive to the attacks of goats who eat the saplings of deciduous trees .