Aresearcher concludes from a 10-year study that the biodiversity of an ecosystem had increased. which set of observations represents evidence for this claim?
(1)there were more niches and greater stability in the ecosystem.
(2)there were more niches and less energy lost as heat in the ecosystem.
(3)there were fewer niches for decomposers and less stability.
(4)there were fewer niches for consumers and greater cycling of materials.\