If you breathe in CO2 and it out why do need plants to change into oxygen?

Humans and plants have a symbiotic relationship when it comes to gas exchange. While it's true that we breathe in oxygen (O2) and breathe out carbon dioxide (CO2) during respiration, plants play a crucial role in replenishing the oxygen we need. Here's why we still need plants even though we breathe out CO2:

Photosynthesis: Plants conduct a vital process called photosynthesis, which converts sunlight, water, and carbon dioxide into glucose (sugar) and oxygen. During this process, plants absorb carbon dioxide from the atmosphere and release oxygen as a byproduct. This means that they help maintain a balance between oxygen and carbon dioxide levels in the air, ensuring that there's enough oxygen for us to breathe.

Carbon Sequestration: Plants act as carbon sinks by absorbing and storing carbon dioxide in their tissues during photosynthesis. When plants grow, they accumulate carbon in their leaves, stems, roots, and soil, effectively removing it from the atmosphere. This process helps mitigate the buildup of greenhouse gases like carbon dioxide, which contribute to climate change.

Oxygen Production: While we release carbon dioxide during respiration, plants release oxygen during photosynthesis. This continuous cycle ensures a constant supply of oxygen in the atmosphere. Without plants, there would be a depletion of oxygen over time, making it difficult for us and other animals to survive.

Habitat and Biodiversity: Plants provide habitats for various organisms, support biodiversity, and contribute to the overall health of ecosystems. They also help regulate the climate, prevent soil erosion, and maintain water cycles, all of which are essential for human survival.

In summary, while we exhale carbon dioxide during respiration, we need plants to engage in photosynthesis to maintain a balanced oxygen and carbon dioxide composition in the atmosphere. Plants are crucial for the production of oxygen, carbon sequestration, the provision of habitats, and overall environmental stability, all of which are vital for human survival and well-being.