Oil and gas is one of our main sources of power and it is a popular pressing problem that the society lives above its demand. Although people are heavily relying on the fossil fuel, the effort and the commitment made by people for maximizing the potential opportunities of alternative energy resources are definitely a positive development.
Firstly, it is acknowledged by many professionals and the general public that the fossilized fuels are bound to be depleted; simply put, the availability of the source is strictly limited. To elaborate, studies completed by statisticians and environmentalists suspect that the oil and gas will face its lifetime in less than 50 years from now. For the sake of continued usage of the modern technology, it is strongly recommended to encourage the use of its substitutes, which do not have its concerns over the availability in the near future.
Secondly, another positive aspect of the second option resources, such as wind and solar, lies on the fact that it demonstrates minimal impact on the air qualities, especially in the metropolitan areas. Fossil fuel, when it is burned, releases the carbon dioxide that exacerbates the degree of air pollution. In order to save the environment, people are demonstrating their initiative to improve the pollution level by using the other resources; it is definitely a responsible action exerted by the general public, which is considered as a positive development in our society.
To conclude, although people are heavily dependent on fossil fuels nowadays, they are now aware of its limit, and the effort and the commitment in saving the environment by supporting the alternative energy resources is definitely a good sign in our society. 
Oil and gas is one of our main sources of power and it is a popular pressing problem that the society  
lives
 above its demand. Although  
people
 are  
heavily
 relying on the fossil  
fuel
, the effort and the commitment made by  
people
 for maximizing the potential opportunities of alternative energy resources are definitely a  
positive
 development. 
Firstly
, it  
is acknowledged
 by  
many
 professionals and the  
general public
 that the fossilized  
fuels
  are bound
 to  
be depleted
;  
simply
 put, the availability of the source is  
strictly
 limited. To elaborate, studies completed by statisticians and environmentalists suspect that the oil and gas will face its lifetime in less than 50 years from  
now
. For the sake of continued usage of the modern technology, it is  
strongly
  recommended to encourage
 the  
use
 of its substitutes, which do not have its concerns over the availability in the near future. 
Secondly
, another  
positive
 aspect of the second option resources, such as wind and solar, lies on the fact that it demonstrates minimal impact on the air qualities,  
especially
 in the metropolitan areas. Fossil  
fuel
, when it  
is burned
, releases the carbon dioxide that exacerbates the degree of air pollution. In order to save the environment,  
people
 are demonstrating their initiative to  
improve
 the pollution level by using the other resources; it is definitely a responsible action exerted by the  
general public
, which  
is considered
 as a  
positive
 development in our society. 
To conclude
, although  
people
 are  
heavily
 dependent on fossil  
fuels
 nowadays, they are  
now
 aware of its limit, and the effort and the commitment in saving the environment by supporting the alternative energy resources is definitely a  
good
  sign
 in our society. 
7Linking words, meeting the goal of 7 or more
7Repeated words, meeting the goal of 3 or fewer
7Mistakes