The graph illustrates the trend in number of species in two different ecosystems. select the statements that are supported by the data on the changes in each ecosystem

Correct answers are

1) Ecosystem 1 has more abundant and consistent resources.

2) The rate of decrease in the number of species in ecosystem two reflects a disruption of the food web.

3) Ecosystem one has a broad range of trophic levels providing more stability.

4) Ecosystem two has fewer ecological niches which limits the ability of species to adapt to change.

i think the miocene epoch spans the time from 23 million to 12 million years ago.