Simplify the following text for a Grade 10 native English-speaking person.
Original: The main threat to the Palos Verdes blue has been habitat destruction due to weeds and rototilling , which has negative effects on the essential larval foodplants .
Simplified: The main threat to the Palos Verdes Blue has been the destruction of their living space by weeds , which has negative effects on the larval foodplants needed .