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| Backpackers, Hermanus. "Great White Shark Cage Diving." Photograph. Flickr. Yahoo. 10 March. 2009. Web. 12. Jan. 2014. <http://www.flickr.com/photos/hermanusbackpackers/3343254977/> |
This articles is about a male shark that has lived into his 70s. Scientist have identified their age by using a new technique to age the tissues of these creatures. Scientists have tried to age the shark by counting annual growth rings in their tissues, such as in their vertebrae. They made these rings easier to read by looking for a known radioactive marker. These great white sharks are considered as a threatened species. The population of these sharks go down because of problems such as: fishing, environmental and other pressures.
This article connects to my biology class that I took last year. In biology class we learned about relative dating and different ways that scientists determine how old something is. In the article they figured out about how old a shark was by looking at the shark's vertebrae and tissues.
I feel that this event is very interesting. I never knew that a shark could live so long. I've hear about so many animals dying in a few years, it's surprising that a shark can live to be 70. This does affect me because I love science and it's good to learn something you never knew. I can probably use this information in the future.
What is the central idea of the passage and how is it developed and refined throughout the selection? Use evidence from the selection to support your answer.
The central idea of the passage is that a white shark can live to be 70, the ways scientist identify their age, and the problems that the great white shark faces. Ms. Hamady states in the article, "Also, as they get older and larger, the sharks either stop laying down material or the layers become so thin they're really difficult to see. It's very fine work. I'm using a microscope and a razor and even then it's hard to get annual resolution." This quote is talking about the difficulties scientists face while trying to figure out the age of a white shark. This article also talks about the problems great white sharks face. The central idea is developed and refined throughout the article by going from good to bad. At first, the article starts out talking about a shark that has lived for 70 years and how scientists determine their age. Then, it talks about other sharks in their record that have lived for many years. Lastly, they finish off saying that these sharks are one of the threatened species and that we need the conservation of white sharks. As Ian Fergusson said in the passage, ""It puts a spotlight on the need for the conservation of white sharks to be considered on a par with the conservation we have - and take for granted - for marine mammals, which also have low fecundity, long lifespans and late maturity.
Amos, Jonathan. "Great white sharks 'live for 70 years." BBC. BBC. 8 Jan. 2014. Web. 10 Jan. 2014.
<http://www.bbc.co.uk/news/science-environment-25655666>.
I think that it is so sad that the sharks die because of the environment. I would love to figure out how old an animal is. The only error I see is you have two quotation marks in a sentence. The picture of the shark really scared me. Your background goes really well with your text. I think that people should take better care of the ocean because that is where some animals live. I know that I would not want anyone to harm my house. I also think that the rich people who say they care about the animals should do something to help their environment. I really enjoyed reading your blog.
ReplyDeleteI really do like your blog. It shows exactly how you feel about this topic and its awesome. Even though its sad that this happens to such magnificent creatures. I really hope that they don't go extinct because I've always loved the great white sharks. The only thing I didn't know about in your blog is how to tell how old they are. I never figured that out until reading this, and it's really cool how they do this observation. Would of never thought that would be the way to do it. There are somethings that I see that bugs me. At the end you have two quotation marks at the begging of the sentence. The other problem is when you used your first quote you put the period before the quotation marks instead of after. By the way, do you think the shark species will go extinct? What ways can it be saved?
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