Reading for the Real world 2nd_Student-Book 3 Unit 09 (E)

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biodiversity

the variation in an environment based on the number of different types of life found there
The city wanted to increase its level of biodiversity.

canopy

a piece of cloth or material that hangs over something in order to shelter it
The adults put up a canopy over the picnic area to protect the children from the hot sun.

constitute

to form something
Giving advice to young teens constituted most of his time at work.

deforestation

the process of removing the trees from an area
deforestation is destroying large areas of rain forest.

density

(technical) the relation between the mass and size of a substance
The density of a bowling ball is higher than a basketball.

deplete

to reduce the amount or number of something
Because hunters killed so many buffalos all at once, the buffalo population was depleted to near extinction.

devastating

Overwhelming because it is tragic or shocking
The devastating news caused her mother to have a heart attack.

evaporation

the process of something changing from a liquid into a gaseous state
evaporation is the process in which water is transformed from its liquid state to vapor state.

extinction

the state that happens when every animal or plant of a certain type is dead
The extinction of the dinosaur happened million of years ago.

optimum

being the best or most desirable
To get optimum results from your digital camera, you should read all of the instructions.

release

to free a person or thing from a limited or locked place, such as a prison, a CAGE or a container
After catching 30 fish, the fisherman released them back into the ocean.

renew

to make something stronger, fresher, or like new
After 25 years of marriage, the couple renewed their vows at a small ceremony in Hawaii.

sustainable

capable of being used without being destroyed or damaging the environment
Solar power is sustainable energy because it will always be available, while oil is not because supplies may be depleted.

urgently

with great urgency; critically; pressingly
Help is urgently needed to save the town from the flood.

vegetation

plants that grow in a specific area or plants in general
The vegetation in the forest was rich and abundant.