Want this question answered?
animal specieshuman species
(1) Species vary globally. (2) Species vary locally. (3) Species vary over time.
Charles Darwin studied many different species throughout his life. During the 5 year journey on the beagle in 1831, Darwin collected and catologed many different species from the galopogus islands. The most famous species that he collected and lead him to his theory were the finches.
Darwin collected enormous numbers of fossils and specimens of extant species, and made thousands of observations of changes. His observations clearly documented that species undergo change over time. Since Darwin's time we have gathered much more data about the processes of evolutionary change, such that the theory of evolution is now considered the foundational concept of modern biology.
The book fully titled On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life, was written by Charles Darwin.
animal specieshuman species
(1) Species vary globally. (2) Species vary locally. (3) Species vary over time.
Charles Darwin studied many different species throughout his life. During the 5 year journey on the beagle in 1831, Darwin collected and catologed many different species from the galopogus islands. The most famous species that he collected and lead him to his theory were the finches.
Anatomical structures provide physical characteristics that can be compared across different organisms to identify similarities and differences. These similarities and differences can help in grouping organisms into taxonomic categories based on shared traits. By analyzing anatomical structures, scientists can infer evolutionary relationships and determine how various species are related to one another.
If there was no change in species over time, then all fossils of that species would be identical.
Fossils provide valuable evidence of how organisms have evolved over time. By studying the structure, shape, and characteristics of fossils, scientists can observe unique features that have changed or stayed the same. Fossils also help in understanding the transition from one species to another and provide a record of extinct species, giving insights into the diversity of past ecosystems and the evolutionary journey of life on Earth.
Darwin collected enormous numbers of fossils and specimens of extant species, and made thousands of observations of changes. His observations clearly documented that species undergo change over time. Since Darwin's time we have gathered much more data about the processes of evolutionary change, such that the theory of evolution is now considered the foundational concept of modern biology.
Modern animals may be related to fossilized organisms.
Fossils' existence confirms that species are not fixed but can evolve into other species over time
By examining fossils and by determining their relative and absolute ages, scientists have collected evidence that supports the theory that species changed over time.
Fossils are used to show changes because they are permanent. These fossils are also old and show evolutionary changes in species alive today.
more than 6,000 years old