Trees and other plants make food by photosynthesis. Green plants use their leaves to collect the sunlight and carbon dioxide from the air. They combined this with water taken in by the plant’s roots. The result is sugar. This sugar gives the plant the energy it needs to grow. During photosynthesis plants release oxygen into the air for us to breathe.

Plants need nutrients to survive. Nutrients and water are absorbed from the soil through the roots. Plants also make nutrients by using sunlight. This is known as photosynthesis.