The tree of life is a model representing the evolutionary relationships between all living organisms, showing how species have diverged from common ancestors. It emphasizes the evolutionary history and lineage of life forms. In contrast, a food web illustrates the feeding relationships and energy flow among organisms within an ecosystem. While the tree of life focuses on evolutionary lineage, a food web depicts ecological interactions and nutrient cycling. Both models are essential for understanding the complexity of biology and the interconnectedness of life on Earth.