Environmental Science
Photosynthesis in Ecosystems
Quick fact
One tree can produce enough oxygen for two people per year through photosynthesis.
Why this is interesting
Did you know that every breath of air you take is partly thanks to a leaf on your windowsill? This process, photosynthesis, is the engine of life on Earth.
Read the full explanation
Understanding Photosynthesis in Ecosystems
Photosynthesis happens in plants, algae, and some bacteria. These organisms use sunlight to convert carbon dioxide and water into glucose (energy) and oxygen. This process forms the foundation of food chains and supports nearly all life on Earth.
A deeper explanation
In photosynthesis, light energy is captured by chlorophyll, a green pigment in plant cells. This energy drives two main stages: light-dependent reactions, which produce ATP and oxygen, and the Calvin cycle (carbon fixation), where carbon dioxide is converted into glucose. This process not only provides food for plants but also releases oxygen, making it vital for sustaining life on Earth.