European rabbits were introduced into australia and quickly spread, reproduced, and became a terrible pest. they eat up to $600 million worth of food and pasture crops annually, and have damaged the populations of many native plants and the populations of animals that eat the plants. twice in the past 50 years, rabbit diseases have been introduced to try to control the population, with some success. this is a case where a) an invasive species has caused overharvestingb) an extirpation has occurredc) habitat alteration resulted in decreased biodiversityd) an invasive species has reduced the genetic diversity of indigenous speciese) climate change has decreased the genetic diversity of indigenous species