Biology is the branch of science devoted to studying living organisms, their structures, processes, and interactions. It covers everything from microscopic cells to entire ecosystems. Unlike geology or astronomy, biology is focused on life.

Physics studies the fundamental principles of matter, energy, motion, and forces. It explains natural laws governing the universe, from tiny particles to cosmic systems. Chemistry and biology focus on matter and life, but physics emphasizes energy and interactions.

Galileo is often regarded as the "Father of Modern Science" for his pioneering work in experimentation, observation, and mathematics. He challenged traditional views and introduced evidence-based methods. His contributions laid the foundation for modern scientific inquiry.

Science focuses on understanding the underlying reasons behind natural events and processes. While technology and inventions may result from science, the main goal is explanation. By explaining phenomena, science provides a foundation for further advancements.

The Latin word _scientia_ means "knowledge." This reflects the core purpose of science: to build knowledge about the natural world. Over centuries, the meaning expanded to systematic and evidence-based learning.

Science is not just about gathering facts or building tools; it involves a structured process of studying the natural world. It relies on observation, experimentation, and reasoning. This systematic approach helps in understanding patterns, causes, and relationships in nature.