💡Living organisms are composed of atoms that can bond to form molecules.
🌍Earth has specific molecules, like water, that make it habitable for life.
🔬All organisms rely on four main categories of biological molecules: carbohydrates, lipids, proteins, and nucleic acids.
🥖Carbohydrates serve as an energy source and structural support to cells.
⚙️Nucleic acids contain the genetic instructions for each specific organism.