Question

New settlers to the Polynesian islands brought with them pigs, fowl, and crop plants, as well as stowaways such as the rat, geckos, and weeds. These were new competitive predators to the indigenous species, but probably the most drastic effects on the landscape were caused by
a) natural catastrophes such as hurricanes, earthquakes and tidal waves
b) dogs, which had no natural predators and soon wiped out many indigenous species
c) rapid deforestation by people, which led to open grassland and erosion
d) over-exploitation of mineral and water resources
e) a meteorite that caused a temporary "miniature" Ice Age and years of poor harvests

Answer

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