During this week (18-22 April) I was absent on Monday due to the MUN conference, but I heard that we were told to make a summary of what we learned on weebly. On Tuesday, we proceed to our debate. I believed that evolution and creationism should be taught at the same time, because everyone has the rights to choose what they wanted to learn, and we cannot force people and decide for them what to learn. Teaching both theory will allow them to develop critical thinking by analyzing and questioning both theories, therefore allows them to become a better science thinker. However, we should also teach only one of them, which is evolution, because creationism is something that we should know already through the bible, parent teaching and religion teaching, as it is the basic of religion, while evolution is broad, therefore we should learn more about it. On Friday, we learned about the human evolution. Homonids are a human like species that are bipedal and have intelligence. Homonids are not the same as apes, however they are a close relative. Comparing with other species of homonid's fossil, scientist sees a connection in a form of family tree. The first homonoid was thought to be "Lucy", however, discoveries shows that there are more homonids before Lucy. Homo Habilis were the oldest homonid species found. Homo erectus is the first homonid to use fire and is very skilled. Homonids had lived in community and migrated since back then. Then, scientist concluded that all humans came from one homonid female. This homonid female is referred as "Eve" by scientists.
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During this week (18-22 April) we started the class on Monday by learning about adaptation, which is an physical trait and behavior that enables organism to survive better. There are three type of adaptation: structural, chemical, and behavioral (camouflage, warning coloration, mimicry). We then proceed to the research for tomorrow’s debate about whether Sumatra, Tasmania, Madagascar and Australia are not a part of Pangea from the beginning. On Tuesday, we proceed to our debate. I believe that Sumatra, Tasmania, Madagascar and Australia are a part of Pangea, but the fact that they have different organism is due to habitat isolation and reproductive isolation. However, those islands may not also a part of Pangea to begin with due to the difference of ocean alkalinity surrounding it and the different soil it has, which cause their organism to be different as well. If they are a part of Pangea, they should have similar soil and ocean alkalinity, and the organisms from those island should be found on other islands that used to belong to Pangea as well. On Friday, we learned about species and speciation, which explains why every place has their own different organisms and how are there so many similar species. A certain place has their different organism due to reproductive isolation (prezygotic and postzygotic). Prezygotic mechanism includes temporal isolation, habitat isolation mechanical, gamete and behavioral isolation. Allopatric speciation means that populations become genetically different while sympatric population means that they are not geographically separated. During this week (11-15 April) we started the class on Monday by discussing about the last workshop, which is the peppered moth simulation. Then, we were told about tomorrow’s debate about whether platypus and echidna should belong to the kingdom mammals or a new kingdom. Ms Disty then explain about natural selection where a mutation in an organism occur, causing them to become more competent for survival and they end up reproducing more of their self. They will eventually compete will their non-mutated species and win against them. The evidence of natural selection and mutation are common ancestry, homologous structure, vestigial organs, similar embryotic development and fossils On Tuesday, we did our debate session about the platypus and echidna. I believed that platypus and echidna should belong to a new kingdom consisting of “the living fossils”, as they have a very close relation to our ancestor compared to other organisms, which explain their unique and unusual trait. However, I also believed that they should be put in the mammal kingdom because compared to the other kingdoms, they have more similarity to those in mammal kingdom. On Friday, we were told to do a natural selection simulation worksheet about what happens to the white rabbit if they have brown hair, long teeth and long tail instead depending on the environment. The brown rabbit survive better if they are in the equator, while the white rabbit survive better if they are in the arctic. The long teeth rabbit survive better when it comes to food since longer teeth allows them to eat a variety of food easily. The long tail will have less chance of survival when it comes to the predator because longer tail reduces their agility. During this week (4-8 April) we started the class on Monday by learning about the introduction to evolution. Ms Disty shows us a video titled Cosmos, that shows us the big image of what we are going to be learning this term. We then learned from this movie that organisms came from tone same organism and they evolve through time but connected by the tree of life. On Tuesday, Ms Disty shows us a PPT about the intro to evolution. Basically, Charles Darwin made the theory of evolution after he observed the Galapagos turtle neck difference on each island. He learned about the natural selection of which a mutation occurs then its population increase due to the fact that it has a better survival ability. However the theory of evolution is just a theory since it does not have a strong and concrete proof, therefore considered controversial. On Friday, we were told to do a workshop about the peppered moth simulation. I learned that originally there were only with moths in UK. Due to the industrial revolution however, the environment become darker due to pollution and in order to adapt with its environment, a peppered moth mutation occurs. The peppered moth’s population increased as it shows to be more capable than the white moths in the natural selection. |
AuthorName: Astrida Nayla Archives
April 2016
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