write role of humans to maintain oxygen balance.
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Answer:
Every cell in your body needs oxygen to function. You get the oxygen your cells need from the air you breathe. ... Your body cells use the oxygen you breathe to get energy from the food you eat. This process is called cellular respiration.
Oxygen plays a critical role in respiration, the energy-producing chemistry that drives the metabolisms of most living things. We humans, along with many other creatures, need oxygen in the air we breathe to stay alive. Oxygen is generated during photosynthesis by plants and many types of microbes. Plants both use oxygen (during respiration) and produce it (via photosynthesis).
Oxygen can also form a molecule of three atoms, which is known as ozone (O3). Ozone in Earth's stratosphere plays a helpful role by blocking most of the harmful UV radiation from the Sun, while ozone in the troposphere is a hazardous pollutant.
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