Indeed mathematics is not only needed but indispensable to other natural sciences in order to describe truth of natural laws and thereby behaviors logically through reason so that they function properly and continue to be valid consistently. Science works properly in studying truth and solving problems when results are not arbitrary and illogical but established formally from scientific principles, logic and rational thinking or reasoning, tools of mathematics.
I just want to add that as of a decade ago or so, Mathematics/Statistics have become the standard analytical tool in most social sciences. Fields such as Mathematical Biology, Mathematical Psychology, Causal Education Research, Applied Econometrics, Epidemiology, Algebraic Statistics and many others are developing quickly and are in great need of participating scholars. Mainly due to the exponential growth of digital technology and access to enormous sets of data, and the desire to formalize social sciences. Some of these terms did not even exist when I got my PhD. The point is that math, logic and Quantitative Reasoning are essential for natural and social sciences. Being a pure mathematician, I'm just this new rigorous data driven fields with an existing or developing Mathematical formalism. I will remark on an earlier answer regarding Computer Science; I completely agree but I think jointly CS and Math can lead your career in so many directions (just search Data Scientist). And a little factoid, several well known and respectrd universities are seriously considering making computer science a required course for general education, some would count it instead of math, and some even favoring it over math.