Radiometric dating practice questions international dating in atlanta
Which of the following specifically supports the idea that we share a common ancestor with other animals? Fossil evidence indicates that species have changed over time. Radioactive dating indicates that the Earth is over 4 billion years old. We have the same bone structure as other organisms. Individuals of different sexes from the same species can look different from one another. Why are bats skin flaps and birds feathers considered analogous to one another?
Ages of many millions of years for rocks and fossils are glibly presented as fact in many textbooks, the popular media, and museums. One has only to wait: time itself performs the miracles.”1 Yet few people seem to know how these radiometric dating methods work. Both species have skin flaps that let them glide from tree to tree, although they are not closely related to each other. Australian sugar gliders are squirrel-like marsupial mammals (their young develop inside an external pouch). Therefore, carbon has three isotopes, which are specified as carbon-12, carbon-13 and carbon-14 (figure 1). Comparison of stable and unstable atoms of the element carbon.They have six protons in their nuclei and six electrons orbiting their nuclei, which gives carbon its chemical properties.