Which of the following statements are correct about the impact of Darwin on Geographical Thought
A. Davision Concept of cycle of erosion was inspired by the central idea in the Origin of Species regarding change in species through time.
B. Siddal stressed the need for physiological study to assess environmental effects on man.
C. The Davision geomorphology adopted the biological analogy of ageing to the development of landforms.
D. Fleure had focussed on the theme of natural selection and environmental influences.
Choose the correct answer from the options given below:

Correct option is C

The correct answer is: (c), a and c
Davision Concept of cycle of erosion was inspired by the central idea in the Origin of Species regarding change in species through time.
The Davision geomorphology adopted the biological analogy of ageing to the development of landforms.
Some of the significant influences of Darwin’s theory on the development of geographical concepts:
1. Impact on Geomorphology:
Darwin's theory had a significant impact on the perspectives of physical geographers. Following Darwin's groundbreaking contributions, geology and geomorphology emerged as particularly ambitious branches of the natural sciences, alongside biology.
2. Impact on Landschaft:
The German geomorphologists, influenced by the Darwin’s theory of origin of species started to define geography as ‘landscape science’.
Viewed in these terms, geography was fundamentally concerned with the form of landscape of particular regions and a number of schemes were proposed to classify landscapes and their elements and to provide for formal procedures of analysis.
3. Impact on Human Geography:
Darwin’s theory about the ‘origin of species’ and ‘descent of man’ gave a new direction to the various sub-fields of human geography. The doctrine that human activities are controlled by the environment (environmental determinism) took a new turn. Darwin’s notions regarding evolution were taken up by the German and American geographers to explain the man and environment relationship. Thus the environmental determinism became an important school in human geography.
4. Impact on Political Geography:
Influenced by Darwin, a very important concept, namely, ‘lebensraum’ (living space) was coined by Ratzel. In his book on Political Geography, Ratzel equated a nation with a living organism, and argued that a country’s search for territorial expansion was similar to a growing organism’s search for space.
Impact on Cultural Landscape:
The term ‘cultural landscape’ was developed in American geography in 1925 by Carl Sauer with the publication of his article ‘The Morphology of Landscape’. He developed this concept as an alternative to environmental determinism