All sciences require observation, math does not. Chemistry is just a subset of physics, and biology is just a specific application of chemistry. So, physics it is….Which science subject is the most important?

Fundamental force, also called fundamental interaction, in physics, any of the four basic forces—gravitational, electromagnetic, strong, and weak—that govern how objects or particles interact and how certain particles decay.

However, physics places a larger emphasis on fundamental theory (with its deep mathematical treatment) while chemistry places more emphasis in combining the most important mathematical definitions of the theory with the approach of the molecular models.

It seems pretty obvious to me that Biology is a better science than Physics. Sure, it’s nice that Physics can help speed up computers, go to space, and make fancy toys. But, Biology is the study of life. More importantly, Biology is used to keep us living longer.

Physics should scale better, but you really should make your decision on what aspects of science you will enjoy most. If you like learning about the environment, human body (systems), genetics etc from yr 10 then Biology is a good option.

Beginning university students in the sciences usually consider biology to be much easier than physics or chemistry. From their experience in high school, physics has math and formulae that must be understood to be applied correctly, but the study of biology relies mainly on memorization.

If you’re good at memorization, biology will probably be the easiest. If you’re at math, physics will be the easiest. If you forever curious or good with concepts, chemistry may be the easiest.