One good place to look is JobFutures Canada. This is a Canadian government website that helps you learn about future career possibilities. For instance, their page on Biology shows that about 80% of people who chose careers in biology are generally happy with the choice. Occupational breakdown is given as follows:
University Professors and Assistants 18%
Technical Occupations in Life Sciences 13%
Life Science Professionals 12%
Mathematicians, Systems Analysts and Computer Programmers 7%
Policy and Program Officers, Researchers and Consultants 5%
To be honest, it's too early for you to be specific about what you want to do for a career. Just work hard and do well in high-school science classes. Then take introductory science courses at university or community college, perhaps specializing in biology but not neglecting chemistry and physics (because you'll need both of those in biology). At university, or even in your last year of high school try to get summer jobs in labs at universities or biotech companies in your area. This will also give you more ideas about the "biology scheme of things". The main point is: you have lots of time, so don't worry about it.
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