Comparative measurements involve evaluating two or more items to understand their differences or similarities. For example, when comparing the heights of two people, you might say that Alice is taller than Bob by 5 inches. This method helps us make sense of various attributes, such as size, weight, or speed, by placing them side by side. In science, comparative measurements are crucial for experiments. Researchers might compare the growth rates of plants under different conditions, like sunlight versus shade. By measuring and analyzing these differences, scientists can draw conclusions about what factors influence growth, leading to better understanding and advancements in fields like agriculture and botany.