Read the text below. For questions choose the correct answer. 
 
Saving the Environment
 
We all know that in an ecosystem the well-being of one is closely connected with that of another. Every living being — microorganisms, insects, animals, birds, and plants — is   on each other for survival. The extinction of one species will naturally create an imbalance within the ecosystem, all other life forms within it.
 
Every individual has a role to play in preserving the Earth’s environment. A positive change, no how small, holds the ability to create a lasting effect of change in the long . Just imagine, if every individual all around the world (that is, 7 billion!) started doing their parts in reducing their carbon footprint and the green way of living, how massive a change could we create! Taking baby steps and starting by accepting positive everyday habits could go a long way in saving the environment.
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