Unit 8 Reflection

In this unit, we learned about artificial and natural selection, and how does it relate to the evolution of species. While natural selection is the "survival of the fittest" and artificial selection is we pick out traits that we want in order to mate different individuals with these traits, the population does evolve by having some indviduals die and other indviduals live. We also learned about speciation and the different types of isolations: Behavioral, Geographic, and Temporal isolation, along with discovering relative dating and drawing evidence from fossils to determine how long they live and when. Next, we learned about gene pools, and allele frequencies which are used in the Hunger games lab when we found the "A" and "a" allele frequencies based on how much Stumpys, Knucklers , and Pinchers. In the population, there are different kinds of selections such as Behavioral, Stablizing, and Directive selection based on the phenotypes it favored. We also talked about Embryology in which we once shared a common ancestry with other animals such as frogs, birds, but eventually evolved differently from the time.  There is evo-devo which is evolution among multicelluar organisms such as humans, whales, and any other living individuals. Also there is adaptive radiation, where there is rapid speciation from a common ancestor. Finally, we learned the History of Earth was long and vast. It was divided into 4 eras: Precambrian, Paleozoic, Mesozoic, and Cenozoic Era. Precambrian era shared 88% of Earth's time and was when concentration of oxygen increased, Paleozoic era is divided into Cambrian, Ordovician, Silurian, Devonian, Carboniferous, and Permian. It was a time where animal diversity increased and the colonization of land and animals, diversification among vascular plants, along with the "age of fish" and domination of amphibians. The Mesozoic era was the "Age of Reptiles, and Cenozoic Era was the time insects and flowering plants dominate, and the Ice age along with evolution of humans.

I want to learn more about whether there will be another era existing after the Cenozoic Era? Also, is there going to be another mass extinction? In other words, is there going to be a 7th math extinction? I do not have any questions, and I wonder how long will there be life on Earth?

I have tried to make an effort on it, by not stressing after each test, and knowing that I cannot control the final score or result I get on the tests. All I can do, is control how much time I study for the tests and how much preparation is needed. I still need to work on having more confidence in myself on tests.