Biogeographic observations indeed suggest that a evolutionary process caused new species to arise, through the process we call natural selection. This is due to an animals adaptability in it's environment.
Biographical observations suggest that a modification process caused new species to arise in the way that new species are showing up without explanation and with new adaptations to their environment. One example that is widely used is the appearance of opposable thumbs in humans and monkeys.
Darwin studied modern organisms to understand how they descended from common ancestors and underwent modification over time through the process of evolution. He observed variations in traits among species and how these traits adapted to different environments, which contributed to their survival and reproduction. This concept of descent with modification emphasizes that species are not static but continually evolve, reflecting changes in both genetic variation and environmental pressures. Through his observations, Darwin laid the foundation for the theory of natural selection, illustrating how species adapt and diversify over generations.
Darwin used the phrase "descent with modification" in his book "On the Origin of Species" instead of the word "evolution." He used this phrase to describe the process by which species change over time through natural selection.
Organisms on island clusters were very similar to each other and to nearby mainland species.
That the offspring of one species may adapt to it's surroundings and live longer then though without the modification.
Darwin's theory of descent with modification, also known as evolution by natural selection, proposes that species evolve over time through the process of variation and differential survival and reproduction. This means that species descend from common ancestors and accumulate changes or modifications that help them adapt to their environment.
Charles Darwin's idea of how species change over time is called natural selection. This process involves the survival and reproduction of organisms that are best adapted to their environment, leading to gradual changes in the characteristics of a population.
That the offspring of one species may adapt to it's surroundings and live longer then though without the modification.
That geographic region is called a "biogeographic region." This term refers to areas with distinct ecological characteristics that support the evolution of specific plant and animal species.
That the offspring of one species may adapt to it's surroundings and live longer then though without the modification.
that species today look different from their ancestors
modification