USA

Yes. you can. Grades should not stop you from applying for good universities. Appear for SAT and TOEFL exam, prepare a very good personal statement and your application well. Chances may be less in the top universities, but good application materials, and test scores work most of the time.
Best of luck.

Hi,
Some of the best names include:
Massachusetts Institute of Technology
University of California-Berkeley
Carnegie Mellon University
California Institute of Technology
Georgia Institute of Technology
Cornell University
The fee structure may range from $20,000 to $50,000 per year for international students.

First, appear for GRE exam. Based on you score in GRE exam, you can opt for a good college to pursue MS.

Engineering candidates can get the jobs easily as compared to MBBS candidates.

Both countries have their own benefits and if you are looking for job opportunities post your studies, check the skill shortage list for both and decide. Cost wise, Germany is a better option but you need to learn German though the courses might be offered in English as well.
USA, the jobs are quite competitive right now and with limited visas issued every year, you need to be competent enough to get sponsors.

Hi Moksh,
CMA in India has MoU with ICAI and with lot of MNCs in India itself, the jobs are definitely better. The following link might help you further
https://www.quora.com/What-is-the-average-salary-of-a-CMA-in-India

Hi Aashis,
You must contact the universities directly for Ph.D admissions. Universities in UK generally do not offer funding or scholarships for Ph.D. You can try for universities in US and other countries. It is hard to suggest a name as Ph.D admissions are a different league altogether. Refer to a few websites like QS and check the top university websites if they are offering research opportunities in Life Sciences/related areas. Write to the department head or whatsoever for the process and funding options.

You must take the GRE and TOEFL before applying. Please visit university websites for GRE and TOEFL requirement. You will also require personal statement, academic transcripts, letters of recommendation from your teachers while applying. All of these information will be found the website of the universities.

Yes, but is given to deserving students with a strong profile.