Chapter 19 The History of Life by Lucas Redmond https://padlet.com/2025redmondl/di44j20ffbrdk2e0 Made with magic en-us 2022-05-17 13:04:03 UTC 2022-05-17 13:39:49 UTC hello@padlet.com Vocabulary 2025redmondl https://padlet.com/2025redmondl/di44j20ffbrdk2e0/wish/2187586490
1. Paleontologist- a scientist who studies the history of life on Earth through the fossil record

2. Fossil-the preserved remains, or traces of remains, of ancient organisms.

3. Extinct- Species has died out.

4. Sedimentary Rock- formed from pre-existing rocks or pieces of once-living organisms.

5. Relative Dating- allows paleontologists to determine whether a fossil is older or younger than other fossils.

6. Radiometric Dating- Uses the proportion of radioactive to nonreactive isotopes to calculate the age of a sample.

7. Index Fossils-distinctive fossils used to establish and compare the relative ages of rock layers and the fossils they contain.

8. Half-life-the time required for half of the radioactive atoms in a sample to decay.

9. Geologic Time Scale- based on both relative and absolute dating.

10. Theory of Plate Tectonics-explains how solid continental “plates” move slowly above Earth’s molten core—a process called continental drift.]]> 2022-05-17 13:13:19 UTC https://padlet.com/2025redmondl/di44j20ffbrdk2e0/wish/2187586490 2025redmondl https://padlet.com/2025redmondl/di44j20ffbrdk2e0/wish/2187596110 2022-05-17 13:18:45 UTC https://padlet.com/2025redmondl/di44j20ffbrdk2e0/wish/2187596110 2025redmondl https://padlet.com/2025redmondl/di44j20ffbrdk2e0/wish/2187598635 2022-05-17 13:20:12 UTC https://padlet.com/2025redmondl/di44j20ffbrdk2e0/wish/2187598635 2025redmondl https://padlet.com/2025redmondl/di44j20ffbrdk2e0/wish/2187600115 2022-05-17 13:21:04 UTC https://padlet.com/2025redmondl/di44j20ffbrdk2e0/wish/2187600115 2025redmondl https://padlet.com/2025redmondl/di44j20ffbrdk2e0/wish/2187602481 2022-05-17 13:22:24 UTC https://padlet.com/2025redmondl/di44j20ffbrdk2e0/wish/2187602481 2025redmondl https://padlet.com/2025redmondl/di44j20ffbrdk2e0/wish/2187603634 2022-05-17 13:23:00 UTC https://padlet.com/2025redmondl/di44j20ffbrdk2e0/wish/2187603634 2025redmondl https://padlet.com/2025redmondl/di44j20ffbrdk2e0/wish/2187604648 2022-05-17 13:23:28 UTC https://padlet.com/2025redmondl/di44j20ffbrdk2e0/wish/2187604648 2025redmondl https://padlet.com/2025redmondl/di44j20ffbrdk2e0/wish/2187605347 2022-05-17 13:23:47 UTC https://padlet.com/2025redmondl/di44j20ffbrdk2e0/wish/2187605347 Short Answer 2025redmondl https://padlet.com/2025redmondl/di44j20ffbrdk2e0/wish/2187614180 1. Explain why the fossil record is an incomplete recording of the history of life. -Not every organism will turn into a fossil because the process of fossilization requires very specific environmental, geological, and biological conditions.

2.Know the basic divisions of the geologic time scale from larger to smaller. - Eons, eras, periods, epochs, and ages.

3. Describe how sexual reproduction contributes to genetic diversity. - The sperm and egg that are produced contain different combinations of genes than the parent organisms.

4. Describe the necessary conditions for a clade to survive. - If the rate of speciation in a clade is equal to or greater than the rate of extinction.]]> 2022-05-17 13:28:29 UTC https://padlet.com/2025redmondl/di44j20ffbrdk2e0/wish/2187614180 Real World Application 2025redmondl https://padlet.com/2025redmondl/di44j20ffbrdk2e0/wish/2187622376 This chapter is important for paleontologists that study fossils. The chapter shows how to correctly find the age of the fossils which paleontologists need to know. Also, the chapter shows the geologic time scale which shows what age the fossil is from. ]]> 2022-05-17 13:32:51 UTC https://padlet.com/2025redmondl/di44j20ffbrdk2e0/wish/2187622376 2025redmondl https://padlet.com/2025redmondl/di44j20ffbrdk2e0/wish/2187624143
A Brief History of Geologic Time - YouTube
www.youtube.com › watch


]]> 2022-05-17 13:33:47 UTC https://padlet.com/2025redmondl/di44j20ffbrdk2e0/wish/2187624143 Biology Final Projects 2025redmondl https://padlet.com/2025redmondl/di44j20ffbrdk2e0/wish/2187634486 1. Convergent Evolution- It occurs when two species from unrelated lines develop the same traits or features.

2. Adaptive Radiation- the diversification of a group of organisms into forms filling different ecological niches.

3. Coevolution- the influence of closely associated species on each other in their evolution.

4. Gradualism- a term that depicts evolution occurring constantly and gradually in each generation of reproduction.

5. Punctuated Equilibrium- a theory in evolutionary biology which proposes that most sexually reproducing species will experience change in spurts.]]> 2022-05-17 13:39:49 UTC https://padlet.com/2025redmondl/di44j20ffbrdk2e0/wish/2187634486