Australia

Hello Gurdeep, since it is not possible to list out all the changes, please check
https://www.border.gov.au/about/corporate/information/forms/changes/summary-of-changes
https://www.border.gov.au/about/reports-publications/reviews-inquiries/student-visa-programme/simplification-of-the-student-visa-assessment-level
The official immigration Australia website.
Regards

B.Sc Micro and Bio chemistry courses are common and there are many colleges that offer these courses. But agricultural engineering is a rare branch , only few institutions conduct this course. So its more demanding course than Bio chemistry and Microbiology
Agricultural engineers have opportunities in agricultural research centers, universities , large scale nurseries, plantations etc.

Yes a bit because canada has wider market than australia. moreover working population in canada is lesser than australia. saying this I do not mean that australia is complete no. in case you have relatives in australia, they may recommend and it may work in australia too, just that a lil difficult.

No there are no chances to get a job directly in other country specially in Australia. There is only chance to get job there if you are selected from your college directly.

Hello Mohd
You Need minimum 5.5 IELTS score to get student visa for Australia
in 12th you should have physics and maths with minimum 75% marks for good university

Dear Priyanka,
Fee for MBA in Griffith university is different as per Specilizations.I'm providing below a link over there you can check each and every information relating to this.
https://degrees.griffith.edu.au/Program/5159/Overview/International?SearchHash=3JWdIaDBNRuX//2i1NzLSz678Sw=
All the very best

What is your education qualification?

Hello, tuition fee for MS is around A$10,000 to 40,000 a year. You must also consider an additional amount of around A$18,000 to 20,000 per year. Don't forget the application fees, airfares etc.
Regards

Australia is best.