https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh Amelya Villegas Period 3 Biology en-us 2021-06-03 22:51:06 UTC 2023-08-21 07:52:50 UTC hello@padlet.com amelyavillegas2 https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583842385 This extinction occurred about 440 million years ago. The cause is continental drift and subsequent climate change. Although, going into the full story, this might have happened in two waves to cause such a great extinction of 85% of all living species. Brachiopods, trilobites, graptolites and moss animals were the main species killed.]]> 2021-06-03 22:51:06 UTC https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583842385 amelyavillegas2 https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583842386 An extinction event (mass extinction) is when at least half of all species die out in a fairly short amount of time.]]> 2021-06-03 22:51:06 UTC https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583842386 amelyavillegas2 https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583842388 The Devonian extinction happened around 365 million years ago because of lack of oxygen in oceans, fast cooling of air temperatures, volcanic eruptions, and meteors. 80% of all species were killed including coral-sponge reefs in tropics, fish and plankton.]]> 2021-06-03 22:51:06 UTC https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583842388 amelyavillegas2 https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583842389 This was the largest extinction event in history, killing about 95% of all living species. Asteroid strikes, volcanic activity, climate change, and microbes were most likely the cause of this, but it's mostly unknown. It killed off marine invertebrates, land plants, plankton, insects and all life.]]> 2021-06-03 22:51:06 UTC https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583842389 amelyavillegas2 https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583842390 210 million years ago, this extinction happened due to major volcanic activity causing basalt flooding, global climate change, and changing pH and sea levels. Large amphibians, crurotarsans (not crocodiles), insects and conodonts were all affected and killed.]]> 2021-06-03 22:51:06 UTC https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583842390 amelyavillegas2 https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583842392 This extinction is also known as the K-T extinction for short and occurred around 65 million years ago. Dinosaurs, pterosaurs, plesiosaurs, mosasaurs and ammonoids were killed off from extreme asteroid or meteor impact. ]]> 2021-06-03 22:51:06 UTC https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583842392 amelyavillegas2 https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583846507 Variation-All life forms vary in a population
Inheritance-Genetic traits inherited from parents passed to offspring
Selection-Organisms with favorable survival traits live and pass on genes
Time-Evolution takes time and happen through generations. Major changes such as specification takes longer periods of time.]]> 2021-06-03 22:54:34 UTC https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583846507 amelyavillegas2 https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583849644 Organisms better adapted to their environment tend to survive and produce more offspring.]]> 2021-06-03 22:57:09 UTC https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583849644 amelyavillegas2 https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583859073 Small errors in DNA code during cellular reproduction.]]> 2021-06-03 23:04:40 UTC https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583859073 amelyavillegas2 https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583860613 Passing on of genetic information. Influenced by male competition.]]> 2021-06-03 23:05:53 UTC https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583860613 amelyavillegas2 https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583862986 Bottleneck effect- Lucky vs unlucky
Founder's effect- individuals start new population with different alleles.]]> 2021-06-03 23:07:51 UTC https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583862986 amelyavillegas2 https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583864608 When the size of a population is severely decreased by natural causes such as earthquakes, floods, or fires.]]> 2021-06-03 23:09:03 UTC https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583864608 amelyavillegas2 https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583867639 The loss of genetic variation when a new population is made by a small amount of individuals from a larger population, decreasing diversity in the new population.]]> 2021-06-03 23:11:41 UTC https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583867639 amelyavillegas2 https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583869777 Parts that are similar in structure but have different uses in different species.]]> 2021-06-03 23:13:32 UTC https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583869777 amelyavillegas2 https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583874050 Structures in organisms that may have no use to some, but are important to others. Ex: Appendix]]> 2021-06-03 23:17:04 UTC https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583874050 amelyavillegas2 https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583875756 The hypothesis that the development of the embryo of an animal goes through stages resembling successive adult stages of the animal's remote ancestors.]]> 2021-06-03 23:18:36 UTC https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583875756 amelyavillegas2 https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583878714 Difference in molecular similarities can be used to determine degree of relationship of species.]]> 2021-06-03 23:21:00 UTC https://padlet.com/amelyavillegas2/r8srsnn33s5ujwyh/wish/1583878714