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By examining fossils and by determining their relative and absolute ages, scientists have collected evidence that supports the theory that species changed over time.
they are born from the same species and they look alik
Similar bone structures in species
I believe you are referring to evolution, which occurs as a result of natural selection causing species to change into new species over time.
descended from a common ancestor
Related species have similar embryos.
Fossils can be used as evidence for evolution because they can show the development of a species over a long period of time.
Comparative anatomy and evolutionary development have shown the connection between species; both the near and far connections. Look at the bones in your arm and then at the foreleg bones of your cat or dog and see how evolutionarily close the both of you are. The HOX genes between you and fruit flies, the control genes for making bodies, show that you and flies share common ancestry as suggested by evolution.
Subdisciplines used to understand human evolution include paleoanthropology, genetics, archaeology, paleontology, and primatology. Each of these fields provides unique insights into the origins and development of humans through the study of fossil evidence, genetic analysis, ancient artifacts, and the behavior of closely-related species.
By examining fossils and by determining their relative and absolute ages, scientists have collected evidence that supports the theory that species changed over time.
they are born from the same species and they look alik
Similar bone structures in species
evolution
All species have the same genetic code.
All organisms are adapted to their environment to a greater or lesser extent. If the abiotic and biotic factors within a habitat are capable of supporting a particular species in one geographic area, then one might assume that the same species would be found in a similar habitat in a similar geographic area, e.g. in Africa and South America. This is not the case. Plant and animal species are discontinuously distributed throughout the world
I believe you are referring to evolution, which occurs as a result of natural selection causing species to change into new species over time.
descended from a common ancestor