Hello Naresh,
The earnings of a full-time Blogger in Environment field depends on the Company they work and experience and skil sets you have.
Varies companies offers varies salary packages depending upon your job post, experience, working hours, etc.
Top MNC Companies also hires Bloggers, for example Google. So, pay scale varies and it is difficult to predict when it will become Rs. 4,500,000. But it might take little bit of time.
To get more information about Blogger scope, job opportunities, salary, etc you can visit below mentioned link.
https://www.careers360.com/careers/blogger
I hope this information was useful to you.
All The Best!!
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