What process do green plants use to absorb sunlight?

Green plants use the process of photosynthesis to absorb sunlight. During photosynthesis, plants utilize chlorophyll, the green pigment in their leaves, to capture light energy from the sun. This light energy is then used to convert carbon dioxide from the air and water from the soil into glucose, a type of sugar, and oxygen.

This process is fundamental for plants as it allows them to produce their own food and is a crucial part of the ecosystem, as it provides the basis for the food chain. Additionally, the oxygen released during photosynthesis is essential for the survival of most living organisms on Earth. Other processes mentioned, such as respiration, fermentation, and digestion, do not primarily involve the absorption of sunlight and instead relate to energy production and nutrient breakdown in different contexts.