The correct answer to this open question is the following.
Here, there is no question. What do you want to know? You forgot to include the question.
If this is a true or false question, then the answer is true.
It is true that an ecosystem that is not sustainable can break down when a natural disaster occurs. This can lead to organisms in the ecosystem either leaving the area or dying off.
When we are facing a risky scenario like this, increased biodiversity can result in a more sustainable ecosystem for the following reason.
Many species that live in that ecosystem allow more organisms to adapt to that scenario after those series of changes happen. This represents the opportunity to continue living in different manners under distinct circumstances. Indeed, is part of the cycle of life, when changes occur and organisms have to adapt or adjust to the new environmental circumstances.