Answer:
1 the catastrophic event which occurred at the ecosystem.
2 the state of the catastrophic event. was it a serious one or not.
3 the normal state of the ecosystem before the catastrophic event occured.
4 the present state of the ecosystem after the event had occured.
5 the species that lived in that ecosystem and the amount of species which had been displaced.
6 the type of human involvement associated with the catastrophic event.
7 the future events which might occur after the catastrophic event. this could determine if the ecosystem might recover. these future events would famine or drought and disease outbreak.
hope this helps.
