Ecological invasion refers to the process that people consciously or unconsciously bring some organisms into areas suitable for their habitat and reproduction, so that the biological population continues to expand and the distribution area continues to expand stably, thus endangering local production and life and changing local ecological environment.
According to the above definition, which of the followings belongs to ecological invasion?
The water hyacinth produced in South America has gorgeous flowers. It was once introduced into China as an ornamental plant. The fish and shrimp disappeared in Dianchi Lake, Yunnan Province because of the crazy spread of water hyacinth