Where does our food come from? Trees and plants. How do plants make this food? Through the process of photosynthesis. What causes photosynthesis? Sunlight, water, and carbon dioxide. How does the water reach plants and trees? Through soil. How does the soil take water to trees and plants? Through small stems and huge tree trunks. Soil is the perfect home for seeds to germinate and grow. But the process is not so simple. Seed, Soil, Sun shows how various aspects of nature come together perfectly to make food for us. Along the way, it provides glimpses into the many wonders of natural phenomena.