Sunday, November 11, 2007

Critical Thinking for Chap 1/3/4/5/6/8

Chap 1.
#4. Many species of whale have been hunted to the brink of extinction. Many people think that we do not have the right to kill whales and that all whaling should cease. On the other hand, in many cultures whales have been hunted for centuries and still have great cultural importance. People from such cultures argue that limited whaling should be allowed to continue. What is the role that science can play in deciding who is right? What questions cannot be answered by science?
- Well, first of all science can take role on how many species of whales are left in that particular region. After doing so, the scientists can tell the people who catches whale for their culture, not to catch? loads of whale at a time. Science may not be able to answers this question. "Can science help bring back the whales population to normal?" the answer might be yes or no, but it can't be solved scientifically.
Chap 3.
#3. If you owned a seaside home and a bad storm brought heavy winds and high surf to your coastline, would you prefer it to be during a new moon or a quarter moon? Why?
-I would definately prefer the new moon. Because, at the new moon stage, the gravitational force of the new moon causes the north and south pole's water to stretch out. Due to the new moon gravitational force, there might be less damage, because most of the water are outside? earth.
Chap 4.
#1. During the day, algae carry out both photosyntesis and respiration. Small, isolated tide pools on rocky shores are often inhabited by thick growths of seaweeds, which are algae. Would you expect the amount of oxygen in the water to differ between night and day? How?
- Well.. i think that, it differs everytime the sun is up and down. Because during the day respiration and photosyntesis occurs, which creates O2 in the water, but during the night only respiration occurs, which means that CO2 will be dominat in the water?
Chap 5.
#1. Scientists use the particular structure of nucleic acids and other chemical differences to separate the archaea from the bacteria. Can you think of other characteristics that could be used to distinguish not only between these two domains but also between them and Protists?
-Well, archaea are the simplest and most primitive form of life that we know so far. Which means, that prokaryotic which differs from protist.
Chap 6.
#2. Only very few flowering plants have invaded the oceans, but those that have are very successful. What are some possible reasons for the small number of marine flowering plants? How do those that have taken the step mangae to thrive in some enviornments?
-. Well... the flowering plants might have setteled down on shore or land, because it is "almost" impossible to settle down in water. Since most of the flowering plants becomes successful in the land , becuase of the maybe nutritious? lands or very fertile? lands. However, those of the unsuccessful ones, which journeys~ towards the ocean, uses their adaptation skills to survive the long? tiresome? journey -_-;;
Chap 8.
#1. Hagfishes and lampreys are the only living representatives of a very ancient group. Why do you suppose there are still some of these jawless fishes around?
-. Well, the only answer to this question is because they are important to the marine enviornment. For one thing, they clean up the dead, fishes? or animals in the ocean. You can say that they are similar to the cleaner shrimp, although hagfishes and lampreys maybe faster cleaning all the messes!

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