Scientists theorize that Australia was once part of a larger mainland area but due to plate tectonics, broke away. According to island theory, scientists can explain ALL BUT one of these occurrences as a result of Australia becoming and staying an island for a very long time. That is

A) extremes in size, large or small.

B) the evolution of flightless birds.

C) the presence of relics, like the marsupials.

D) a large assortment of plant dispersal mechanisms.

Question

Biology

Danica

6 December, 01:56

Scientists theorize that Australia was once part of a larger mainland area but due to plate tectonics, broke away. According to island theory, scientists can explain ALL BUT one of these occurrences as a result of Australia becoming and staying an island for a very long time. That is

A) extremes in size, large or small.

B) the evolution of flightless birds.

C) the presence of relics, like the marsupials.

D) a large assortment of plant dispersal mechanisms.

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Answers (1)

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Rachel Ritter · Answer 1

The correct answer is letter A, extremes in sizes of organisms that are both large and small. Australia is not known for species that have those distinct characteristics. It is a place where wildlife in biodiversity is extreme because of the climate that it has and the ecosystems that it supports.