FORESTRY
PLANT AND WOOD ANATOMY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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had changed over time
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had remained the same
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were the result of selective breeding
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had no variations
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Detailed explanation-1: -Over time, Darwin began to wonder if species from South America had reached the Galapagos and then changed as they adapted to new environments. This idea-that species could change over time-eventually led to Darwin’s theory of evolution by natural selection.
Detailed explanation-2: -Darwin defined evolution as “descent with modification, ‘’ the idea that species change over time, give rise to new species, and share a common ancestor. The mechanism that Darwin proposed for evolution is natural selection.
Detailed explanation-3: -Darwin noticed that different tortoise species lived on islands with different environments. He realized that the tortoises had traits that allowed them to live in their particular environments. For example, tortoises that ate plants near the ground had rounded shells and shorter necks.
Detailed explanation-4: -Darwin observed the Galapagos finches had a graded series of beak sizes and shapes and predicted these species were modified from one original mainland species.