Stuck between majoring in Biology/Physics or Political Science/Anthropology?

Please be realistic and critical, as I am more of an idealist. I need to be brought back to earth.

I am going into my senior year this fall, and I have yet to confirm my course schedule, primarily because I do not know what I want to do in university. I'm caught between pursuing my interest in physics and/or biology (specifically, ecology) or my love for politics, legal systems, (international relations?) and history.

As of now, my course schedule for next year looks like this:

Social Justice 12, French 12, History 12, Law 12, Physics 12, English 12, Philosophy 12, and a spare/study block. This is the set up to get into a political science program.

In order to study physics, I will need to switch out my French and Philosophy for Biology 12 and Pre Calculus 12. (I really do not want to give up my spare, as I will be doing a lot of work outside of school and will need a break)

Overall, I'm interested in working with NGOs, possibly going to law school/journalism school, and advocating for the environment OR studying quantum mechanics/engineering and somehow applying that to technology to improve the environment.

Please, I need any advice that you are willing to give.

Be as harsh as possible! Thank you.