Answer:
1. Controlled
2. accidental escape
Step-by-step explanation:
Burmese python has no natural predator hence it is an invasive species with no control. Now, in order to use Burmese python for ornamental work it is necessary to control its growth factors or else it would become invasive. However, it this species (which is grown in controlled environment) get suddenly exposed to limitless growth factors such as ample food supply, no natural predators etc. then it will become invasive.