Which of the following phenomena might have influenced the evolution o

Which of the following phenomena might have influenced the evolution of organisms?

1. Continental drift
2. Glacial cycles

Select the correct answer using the code given below.

1 only

2 only

Both 1 and 2

Neither 1 nor 2

Answer is Right!

Answer is Wrong!

This question was previously asked in

UPSC IAS – 2014

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The correct answer is C.

Both Continental drift (1) and Glacial cycles (2) are major geological and climatic phenomena that have profoundly influenced the evolution of organisms. Continental drift alters the distribution of landmasses and oceans, creating or removing physical barriers, changing climate patterns, and leading to the isolation or mixing of populations, which drives speciation and extinction. Glacial cycles cause significant changes in climate, sea levels, and habitats, leading to species migrations, adaptations, extinctions, and the formation of new species through the creation of refugia and altered selective pressures.

The theory of plate tectonics explains continental drift and is a cornerstone of modern geology. Glacial cycles have occurred repeatedly throughout Earth’s history, most notably during the Pleistocene epoch (the ‘Ice Age’).

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