Press "Enter" to skip to content

What is the concept of Uniformitarianism?

James Hutton. Along with Charles Lyell, James Hutton developed the concept of uniformitarianism. This is known as uniformitarianism: the idea that Earth has always changed in uniform ways and that the present is the key to the past. The principle of uniformitarianism is essential to understanding Earth’s history.

What are three ideas about geologic change?

How are catastrophism and gradualism different? They are both ideas about geologic change, but catastrophism is the idea that changes happened quickly in the past by natural disasters, and gradualism is the idea that changes happened very slowly in the past.

What flaw do you see with Cuvier’s theory of catastrophism?

Instead of finding a continuous succession of fossils, Cuvier noticed several gaps where all evidence of life would disappear and then abruptly reappear again after a notable amount of time. Cuvier recognized these gaps in the fossil succession as mass extinction events.

What is the theory of gradualism?

Gradualism in biology and geology refers most broadly to a theory that changes of organic life and of the Earth itself occur through gradual increments, and often that transitions between different states are more or less continual and slow rather than periodic and rapid.

Is evolution gradual or punctuated?

A species can evolve by only one of these, or by both. Scientists think that species with a shorter evolution evolved mostly by punctuated equilibrium, and those with a longer evolution evolved mostly by gradualism. Gradualism is selection and variation that happens more gradually.

Which of the following is most likely a vestigial structure?

Evolution Review – College Biology

Which of the following is most likely a vestigial structure? the human tailbone
According to Darwin evolution occurs because of natural selection.
Darwin drew ideas for his theory from observations of organisms on the Galápagos Islands.

Which of the following is a vestigial structure?

Structures that have no apparent function and appear to be residual parts from a past ancestor are called vestigial structures. Examples of vestigial structures include the human appendix, the pelvic bone of a snake, and the wings of flightless birds….

What are the four processes of natural selection?

Darwin’s process of natural selection has four components.

  • Variation. Organisms (within populations) exhibit individual variation in appearance and behavior.
  • Inheritance. Some traits are consistently passed on from parent to offspring.
  • High rate of population growth.
  • Differential survival and reproduction.