On a newly formed island immigration of new species to the island is initially high but gradually drops toward zero. If there is no extinction of species on the island then why. will immigration eventually drop to zero? (Hint, no extinction implies that the niches on the island match those of the mainland in type and number). eventually all species on the mainland will have reached the island eventually the populations of the earlier species to arrive on the island will grow to be large and there won't be space for additional species that arrive later eventually the island will be colonized by enough species of predators that they will prevent additional species from arriving eventually all of the niches on the island will be filled For most groups of organisms, e.g., flowering plants, birds and mammals, what is the typical pattern of species richness? usually there are more species in the temperate regions with a gradual decline as one moves away from the temperate regions toward both the equator and the poles usually there are more species near the poles with a gradual decline as one moves away from the poles through the temperate regions and finally relatively few near the equator usually there are more species near the equator and poles than there are in the temperate regions usually there are more species near the equator with a gradual decline as one moves away from the equator through the temperate regions and finally relatively few near the poles For all species what limits the maximum population size that can be supported by a given environment and is this static or can it change? biotic potential which does not change significantly carrying capacity which can change predation rates which do not change significantly carrying capacity which does not change significantly predation rates which can change biotic potential which can change