Embark on a comprehensive lecture exploring the dynamics of biological systems, presented by Dr. Akshit Goyal from the International Centre for Theoretical Sciences. Delve into the application of physics tools to explain complex living systems' behaviors. Learn about predator-prey population oscillations, multi-species ecosystem chaos, and microscopic organism swimming. Discover how principles from nonlinear dynamics, statistical physics, and fluid dynamics can be used to model and predict phenomena such as species competition, population catastrophes, bacterial motility, and collective behavior in fluidic environments. This pedagogical lecture, part of a broader summer course, assumes no prior biological knowledge and serves as an introduction to biological physics for undergraduate students.