Reading+1


 * Great Job 7pts ** [[image:happytiger.gif]]

**//*Before Reading//**

1. Read the tilte and list 10 words you think you might find in the text.

-Ocean -Fish -Environment -Biology -Math -Science -Species -Animals -Plants -Formula

2. How can you use math applied to biology. Mention one thing you can think of.

I think it could be used to count the especies that are in extiontion and that exists in the whole world.

3 . What do you know about jelly fish? What kind of fish is it? If you don't know, find out, cut and paste an image of this fish. Please acknowledge the source.

I don't know what jelly fish are.

[]

4. What is dispersion? If you don't know, find out, please acknowledge the source.

Dispersion means separation or spread of something.

**//*While Reading and After Reading//**

1. Try to locate the words you though you were going to find in the text (question 1 before reading) List the words you found

-Species -Environment -Ocean -Formula -Biology -Fish

2. Find what the following referents in bold letters refer to in the text:

- The species of Jellyfish studied are known as Aurelia and **these** are found over much of the world’s temperate oceans. __It refer to the Aurelia__

- By simulating the movement of the jellyfish over a 7,000-year period the study provides strong evidence that the world-wide dispersal post-dates European global shipping and trade, **which** began almost 500 years ago. __It refers to the world-wide dispersal that post-dates__ __European global shipping and trade__

- Ships take in water for stability before a voyage and, despite preventative measures such as mid-ocean exchange/ flushing, **this** **'foreign' water** and **its contents** can find its way into bays and harbors at the ships destination.__It refers to the water that ships take from the__ __ocean to stabilize before a boyahe__

- The computer model could answer similar questions about the migration and introduction of any suspected non-native marine creatures, according to **its** developers Professor Matthew England and Alex Sen Gupta.__It refers to the developers of the computer model.__

- Now we have a tool that can include data on currents, geography and the biology of an organism to help separate natural dispersal **from that** **which happens** through shipping and trade. __It refers to the cause of the separation, what happens with the fishing and trade.__

3. What is happening with the fish?

The moon jellyfish threatened the marine environments because of their dispersion, caused by the international trade and shipping.

4. What explanation scientists had given ?

They said that the moon jellyfish couldn't migrated by itself. So they studied the movement for more than 7000 years and found that the migration began 500 years ago by the time of the shipping and trade.

5. What did mathematicians find out? What does the formula explain?

Mathematicians create d a global Lagrangian model to investigate the limits of natural dispersion of species of the moon jellyfish  over time. The formula shows the location of the jellyfish, on global map of dispersal, at a t time based on the current speed,  time,... Even though the knowledge of natural dispersal of species has been insufficient to predict the spread, they believe that  this jeallyfish have traveled on the ships' ballast water because of the shipping and trade.