Question

Highly specialized species tend to evolve on islands because of the environmental conditions and resource availability.Based on the theory of island biogeography, which of the following would most likely experience the greatest decline of specialist species if an invasive species emigrated from the mainland?
A) A small island a far distance from the mainland
B) A small island in close proximity to the mainland
C) A large island a far distance from the mainland
D) A large island in close proximity to the mainland

Answer 1

Answer:

the answer is b young n

Explanation:

thank round of applause

Answer 2

According to the assertions of the Theory of Island Biography, the greatest decline in specialist species will be seen on B) A small island in close proximity to the mainland.

The Theory of Island Biography shows that the organisms found on an island are as a result of:

• Extinction of some species
• Colonization of the island by species from the mainland
• Speciation - emergence of a new generation of species

Decline in specialist species occurs when invasive species from the mainland come in large numbers. The effect is worse if:

• The island is close to the mainland because it means that the invasive species will not have to travel long.
• The island is small because there will be greater competition for resources.

Based on the above, we can conclude that invasive species would cause more specialist species to decline if the island is close to the mainland and small.

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