A 163 square-kilometer (km2) small island is found 2,000km from the mainland. A second, larger, 230,000km2 island is found 1,000

Question

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A 163 square-kilometer (km2) small island is found 2,000km from the mainland. A second, larger, 230,000km2 island is found 1,000

km from the mainland. Based on the theory of island biogeography, which of the following statements is most likely true about the small island when compared with the large island?
1. The rate of immigration is lower for the small island than for the large island.
2. The small island has niches that are more like the mainland than the large island.
3. The small island has more available resources than the large island.
4. The rate of species extinction is lower on the small island than on the large island.

Geography

2 answers:

Mkey [231] · Answer 1 · 2026-04-02T01:27:15+03:00

The most accurate statement regarding the small island in comparison to the larger island is that "The rate of immigration is lower for the small island than for the large island." To delve deeper into the ecosystem of islands, reference can be made to "The Theory of Island Biogeography" by Edward O. Wilson and Robert MacArthur, published in 1967.

expeople1 [203] · Answer 2 · 2026-04-02T01:25:46+03:00

The extinction rate of species is lower on the smaller island compared to the larger one. According to island biogeography theory, the smaller island has a lesser number of invasive species due to its distance from the mainland. Additionally, limited resources on the smaller island reduce the potential number of species that could face extinction.