Yes, oxygen in the atmosphere is considered an abiotic factor. Abiotic factors are non-living components that can influence living organisms. Oxygen plays a critical role in many biological processes and is essential for the survival of aerobic organisms.
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It is abiotic because it is non-living.
Sunlight is an abiotic factor found in a rainforest ecosystem. It is a crucial element that drives photosynthesis, which is essential for plant growth and the overall functioning of the ecosystem.
About 21% of the Earth's atmosphere is composed of oxygen.
The two main components of the atmosphere are nitrogen and oxygen. Nitrogen makes up about 78% of the atmosphere, while oxygen accounts for around 21%.
About 21 of the Earth's atmosphere is made up of oxygen.