Hello,

You can take up either one or both the streams of science i.e MATHEMATICS AND BIOLOGY in both the fields you can explore and find your areas of interest and can pursue your career in the field. As an individual the field of interest differs and you should take up the field that you think you are were made for as you will enjoy your work life long. So talking about science there are huge number of options that you will have for your future like, You can do B.tech or can do MBBS after completing your graduation you can go for higher studies too like MS or PhD or MBA and many other non technical fields like UPSC too. So it is not about being a girl or a boy both have the same potential it is up to you "What you want to become in life, What you want to accomplish".

All the Best.