S e c o n d e d I t I o n 1 Reading for the Real World 1

 4.
____ Forty percent of all mammals are threatened with extinction.
B
 
Choose the best answer.
 1.
How many ways does the reading passage indicate that humans harm the 
environment?
a. 
One
b. 
Two
c. 
Three 
d. 
Four
 2.
Which is NOT an outcome of mass extinction of life on earth?
a. Rising of sea levels
b. 
Food 
shortages
c. Lack of fresh water
d. 
Natural 
disasters
 3.
Which kind of animal is the Nile perch?
a. 
amphibian
b. 
fish
c. 
bird
d. 
mammal
C
For the next two questions, look for the answers in the passage and 
write them on the lines provided.
 1.
Why are rainforests important to the planet?
______________________________________________________
______________________________________________________
 2.
How can mass extinction of living species lead to the extinction of humans?
______________________________________________________
______________________________________________________

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V 
ocabulary Extension
S 
ummary
57
Here are six words that are related to the topic but are not in the reading. 
Fill in each blank with the best word from the list. Use each word only 
once.
brink ecosystem magnitude deforestation conserve wildlife
1.
Earthquakes are measured on a scale ranging from minor to great depending on 
their __________.
2.
With a population of less than 350, the California Condors are on the 
__________ of extinction.
3.
One of the main reasons for the destruction of the rainforest is __________.