Uni - Biology or Geography. Which do I choose?

I have always liked Biology and Geography. I am doing both for A Level and want to study either at university. I like the detail and analytics of biology but the bridge between the human and physical in geography. But you can't study both.
How do I decide which one to study at uni? Do I take a gap year to explore my passions? Any thoughts would be amazing!

Seems this course was made for you.
https://www.keele.ac.uk/study/undergraduate/undergraduatecourses/biologyandgeography/#:~:text=Biology%20and%20Geography%20%2D%20BSc%20(Hons,human%20impact%20on%20our%20environments.

I didn't realise this was possible! I'll have a look through, thank you!