The Grand Canyon demonstrates superposition by the way it was constructed by natural forces. That means the way the plate are positioned in a certain way. It also demonstrates crosscutting by the way the mountains cross cut fro, range to range. In other words, it is basically where one mountain starts and another one ends. So it is where both mountains are next to each other. This demonstrates crosscutting because the Grand Canyon has many mountains. This canyon is know throughout the world as a very beautiful natural place.
In our science class we were reading and learning about the population of peppered moths. I learned that the peppered moths population in England changed color because of the amount of pollution there is in Engalnd's forests. For example if you were in a forest that was not polluted most moths would be light colored, and they would survive much better than the dark moths. The population for the light moths then go up because they are less likely to be seen by predators, and the dark moths would really show because of the surroundings.
I am not sure what color the moths would be in the future, but I am pretty sure that they will be the color that will help them survive in their environments. This makes natural selection take place just like on the moths life. Natural selection is when an organism is able to survive because of its traits in its own environment. Last chapter we were working on DNA and Genetics. We did an activity about forming family genes and finding out how they would look like if they had those genes. Then with the flip of a coin we found their genotype and with a chart we found their phenotype. First we had to make two parents, first you had to find which parent you were to do either the father or the mother. After that is chosen you then name your parent and figure out their genes by flipping a coin. After that is finished go back and see how your pet parent will look, we did this by looking at a chart that was already done for us. So as you are creating the appearance of this pet you then notice each gene is telling you how they look, because they are not all the same.
Finally when you are done with your parents you then flip the coin to see which trait the offspring will inherit, that will be what chooses how the pet children will look. We did this six times to get six very different children. That meant they either had a trait that looked like the mother or one like the father. At the end each one had different traits and they all had something that looked like each parent or a new trait which would be created by getting a trait for each parent if both parent were homozygous recessive and dominant. I have a couple of traits from both my parents. I think that I have my mom's height so far and I think I have my dad's eyes, hair color, and my dad's smile, I also have my mom's eyes although mine are much darker. I think that this is alike to my family because it shows the likeness of my family and how we all looked alike. This activity really helped me understand the idea of traits and genetics. Even though genetics is not that simple all you have to do is simply get the basic things now unless you want to study this subject any further. Anyway I thought this was a very fun activity and I learned a lot about it now I understand this material. When we took the test I got an A, that means I mastered the subject. I think that when there is over population in one place and there is a little bit of resource it will lead to evolution. It will lead to Evolution because there won't be enough food for everyone. That will cause competition because everyone will want to survive, ad by trying to survive they will try anything that they need to do to stay alive. This can cause evolution because if there isn't enough food in one place the species will then try to fight for their food or they will just go to another place where there is enough food.
If there is enough food and resources in that new area, then they will stay there and reproduce with other species that will create a new species. There that species will then be able to adapt to that place and be able to become different as time passes. When time passes that species will be better adapted to that area and it won't have any trouble living there, but at first it will because it will not have the right body elements to survive such as the fur, beak, or even tail to help them live in that specific area. When these changes than start developing then that will cause evolution because that species is no longer then same. Evolution can be caused by many things. Over population, competition and little resources make that take place and in that process sometimes new species will be created that will then change over time. This sometimes has good impacts or bad impacts to the species' surroundings. Sometimes the whole environment will change when other things change that is the process of evolution. | Fatima G.In these blogs I will write about things that we are currently learning in our science classes and what we think about it. ArchivesJune 2013 Categories |
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