Respuesta :
It’s the first one. Sustainability is the ability to keep the ecosystem going. The ability of an ecosystem to survive a natural disaster is dependent upon biodiversity, because some species will inevitably be decimated. Humans are almost always a threat to ecosystems.
A variety of plant and animal species allows for more survivors of a natural disaster because of more biodiversity of that ecosystem.
How biodiversity contributes to the sustainability of an ecosystem?
The higher biodiversity in an ecosystem refers to greater variety of species in that ecosystem. A great variety of species means that the ecosystem is better able to carry out natural processes in the presence of external stress. Thus, the ecosystem is more sustainable.
So we can conclude that a variety of plant and animal species allows for more survivors of a natural disaster because of more biodiversity of that ecosystem.
Learn more about ecosystem here: https://brainly.com/question/15971107