In defense of planting native gardens and against exotic pets

The worst kind of preventable invasion in our environment can be introducing plant and other life forms in the unique environments we habitat.Human being can be intrusive and had been cause of elimination of many species by its neglect or willful removal.
Lately( in last 50 years) we have been introducing many plants from non native species and other insects ,birds and animals intentionally or unintentionally without knowing or understanding complete impact of this on native species.
These problems have been many times of ignorance by ordinary citizens where we have planted very aggressive plants and lost the capacity to control them,their initial beauty gave way to difficulty of controlling them over powering all fauna.Accidental or intentional release of non native fish in our waters have wiped out long established amphibian life and have left us poorer.Invasion by cats,rats and other insect have also played havoc on bird and other animal life in many unique places .
Our universities should play more important a role in informing long term impact of introduction of any non native species of plants and animal life. WE CAN START WITH STUDY OF ALL NON NATIVE LIFE IN LOCAL ENVIRONMENTS AND WORK TOGETHER IN STUDYING THEIR IMPACT AND HELP OUR COMMUNITIES deal with it through regulation and education.