Lecture 16 Activity 1 Evidence of Evolution

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Across
  1. 5. The age of a fossil from comparing the strata of the Grand Canyon
  2. 6. Continental drift caused major changes in ____ due to differences in size and latitude of the landmasses
  3. 7. A heritable trait that helps an organism survive and reproduce
  4. 9. About 250 million years ago, the Earth was made of a single landmass called ___
  5. 12. Features that are similar due to a common ancestor are called ____ traits
  6. 13. Carbon dating can provide an ___ age of a fossil
  7. 14. Fossils usually form in certain ___ like swamps and shallow seas
Down
  1. 1. Structures that are believed to be remnants from an ancestor because they serve no apparent function in the organism
  2. 2. The theory of plate ____ is based on Earth’s crust being broken into plates of rock and floating on a semisolid mantle
  3. 3. The process in which organisms better adapted to their environment tend to survive and reproduce
  4. 4. Heritable changes in the genetics of a population over time
  5. 8. Features that are similar only due to function are called ___ traits
  6. 10. The study of patterns in the distribution of species across the globe
  7. 11. Form when the remains of organisms are buried in sediment layers