It is all related because in order for a speices to exist or live it must have an relative abundance of land or food in their territories. There also must be a diveristy in mates so that there is no inbreeding. DIversity can also come from the different colors of the species which can show the environment they live(d) in which can help sometimes ward off other predators. I hope this helps.
They provide a good balance between the size and shape of land areas.
C: Ecosystem 1
Because there’s not a lot of diversity in only 10 species, making it easy to wipe out the entire population.
I believe the answer is C, any kind of rock (metamorphic and sediment) can become igneous if melted and cooled.
Hope this helps.