এইচএসসি ইংরেজী প্রথম পত্র

Threats to Tigers of Mangrove Forest
Unit : 8 | Lesson : 4

Supported by Matador Stationary
A vast mangrove forest shared by Bangladesh and India that is home to possibly 500 Bengal tigers is being rapidly destroyed by erosion, rising sea levels and storm surges, according to a major study by researchers at the Zoological Society of London(ZSL) and others.
The Sundarbans forest took the brunt of super cyclone Sidr in 2007, but new satellite studies show that 71% of the forested coastline is retreating by as much as 200 meters a year. If erosion continues at this pace, already threatened tiger populations living in the forests will be put further at risk.

 

Natalie Pittorelli, one of the report’s authors, said: “Coastline etreat is evident everywhere. A continuing ratye of retreat would see these parts of the mangrove disappear within 50 years. On the Indian side of the Sundarbans, the island which extends most into the Bay of Bengal has receded by an average of 150 metres; this would see the disappearance of the island in about 20 years.”

 

The Sundarbans is known for vanishing islands but the scientists said the current retreat of the mangrove forests on the southern coastline is not normal. “The causes for increasing coastline retreat, other than direct anthropogenic ones, include increased frequency of storm surges and other extreme natural events, rises in sea level and increases the vulnerability of mangroves”, said Pettorelli.
“Our result indicate a rapidly retreating coastline that cannot be accounted for by the regular dynamics of the Sundarbans. Degradation is happening fast, weakening this natural shield for India and Bangladesh.

 

“As human development thrives, and global temperature continues to rise, natural protection from tidal waves and cyclones in being degraded at alarming rates. This will inevitably lead to species loss in this richly biodiverse part of the world, if nothing is done to stop it.”
“The Sundarbans is a critical tiger habitat; one of only a handful of remaining forests big enough to hold several hundred tigers. To lose the Sundarbans would be to move a step closer to the extinction of these majestic animals,” said ZSL tiger expert Sarah Christie.

 

 

Multiple Choice Questions:


Read the following text and fill in the blanks with suitable word from the box below. There are more words than needed. Make any grammatical change if necessary.





(a) As a student Luther King was very brilliant.
(b) He donated all the money for the development of the “Negro Nation”.
(c) He was born on 15th January 1929 in the Atlanta city.
(d) After marriage Luther King worked as a clergyman in the Baptist Church of Albania.
(e) He was shot dead in 1966 when he was only 37 years old.
(f) He obtained his doctorate degree from Boston.
(g) Martin Luther King was a great leader in the history of the freedom and rise of the Negro Nation.
(h) He was imprisoned for his movement against the colour difference.
(i) He was awarded Nobel Prize for leading the racial problem of America in a non-violent and peaceful way.
(j) In this time he married an extraordinary learned woman called Corretta Scott.