Cane toads come from South America, but they were brought to Australia in the 1930s

Cane toads come from South America, but they were brought to Australia in the 1930s. The reason people brought them were to help control the beetles that were harming sugar crops, since the toads would eat the beetles. Unfortunately, their introduction the country had some unexpected side effects. The toads began reproducing quickly, and their population spread out of control. They began harming Australia's ecosystem and were thought of as a big problem. compare/con chronological description problem/solution cause/effect sequence