Many things in nature itself are pure applied mathematics (science in general) but many people do not even know this and maybe they would actually like to.
Two simple yet basic mathematical concepts that can easily be found everywhere in nature are the Fibonacci sequence and Fractals. Two more complicated but also fundamental concepts of science are, on the greatest scale of space and time, the existence and phenomena of the universe itself, and on the smallest scale of space and time, Quantum Theory.
