Why Do Many Non-Native Species, Such as a Prickly Pear

Multiple Choice

Why do many non-native species, such as a prickly pear cactus brought to Australia from South America, rapidly become abundant when first introduced?

A) The climate in the new site is more favorable than in its native site.
B) Non-native species increase their reproductive rate when introduced.
C) There are fewer predators and parasites capable of attacking the non-native species in the new site.
D) The carrying capacity at the new site is higher than at the native site.
E) Growth changes from an S-curve to a J-curve at the new site.