Trees capture carbon dioxide through a process called photosynthesis. During photosynthesis, trees take in carbon dioxide from the atmosphere and convert it into glucose, a type of sugar that serves as an energy source for the tree. This process also releases oxygen back into the atmosphere.

During photosynthesis, trees use energy from sunlight to convert carbon dioxide and water into glucose and oxygen. The glucose is used as an energy source for the tree, while the oxygen is released into the atmosphere.

As trees grow, they absorb and store carbon dioxide in their wood, leaves, and roots. When a tree dies, the carbon stored in its wood and other tissues continues to be stored in the ecosystem, often in the form of wood products or in the soil. This process helps to offset the carbon emissions that come from burning fossil fuels and other human activities.