Animal is real substantial element for human beings. Over recent years, more funds have been allocated to save the threatened animals, although some people claim that only of those give advantageous to human life. Therefore, I argue that only beneficial animal should be considered to be saved.
To support that agreement, several explanations have been gained. First and foremost, saving all the world's endangered animal will cost a great amount of money. In other side, many people are starving or suffering hazardous disease in many parts of world that need to support by expenditure. According to news from The British Broadcasting Corporation (BBC), the study in 2012 envisaged that preserving threatened land animals would cost $76 billion or around £49 billion a year, while it would cost more if our targets are entire marine species. Moreover, it is a fact that extinction is a natural process. Before human existed in the earth, several mass extinctions had occurred. The viable example can be seen from the extinction of dinosaurs. It is estimated that around 65 million years ago, the dinosaurs vanished without any intervention from human.
However, some people disagree about that statement. They argue that the most obvious reason is about ecological value. In human-social science, we learn that human is social creature. As like human, individual plant and animal cannot live by itself. Each animal depends on other animal or plant, and vice versa. One animal or plant extinction can disturb other organisms that interact with it. For instance, based on the U. S. Fish and Wildlife Service, the disappearance of one plant or animal can tend to the vanishment of 30 other creatures.
To sum up, it is evident that saving endangered animals cost a great amount of money. Although some people think preserving all threatened animals is a must, it is proofed that only animal which can give beneficial to human life should be saved. 
 Animal
 is real substantial element for  
human
 beings. Over recent years, more funds have  
been allocated
 to save the threatened  
animals
, although  
some
  people
 claim that  
only
 of those give advantageous to  
human
 life.  
Therefore
, I argue that  
only
 beneficial  
animal
 should  
be considered
 to  
be saved
.
To support that agreement, several explanations have  
been gained
.  
First
 and foremost, saving all the world's endangered  
animal
 will  
cost
 a great amount of money. In  
other
 side,  
many
  people
 are starving or suffering hazardous disease in  
many
 parts of world that need to support by expenditure. According to news from The British Broadcasting Corporation (BBC), the study in 2012 envisaged that preserving threatened land  
animals
 would  
cost
 $76 billion or around £49 billion a year, while it would  
cost
 more if our targets are entire marine species.  
Moreover
, it is a fact that  
extinction
 is a natural process.  
Before
  human
 existed in the earth, several mass  
extinctions
 had occurred. The viable example can be  
seen
 from the  
extinction
 of dinosaurs. It  
is estimated
 that around 65 million years ago, the dinosaurs vanished without any intervention from human. 
However
,  
some
  people
 disagree about that statement. They argue that the most obvious reason is about ecological value. In human-social science, we learn that  
human
 is social creature. As like  
human
, individual  
plant
 and  
animal
 cannot  
live
 by itself. Each  
animal
 depends on  
other
  animal
 or  
plant
, and vice versa. One  
animal
 or  
plant
  extinction
 can disturb  
other
 organisms that interact with it.  
For instance
, based on the U. S. Fish and Wildlife Service, the disappearance of one  
plant
 or  
animal
 can tend to the  
vanishment
 of 30  
other
 creatures.
To sum up, it is evident that saving endangered  
animals
  cost
 a great amount of money. Although  
some
  people
  think
 preserving all threatened  
animals
 is a  
must
, it  
is proofed
 that  
only
  animal
 which can give beneficial to  
human
 life should  
be saved
.