10 Questions
What is the approximate percentage of oxygen in the Earth's atmosphere?
21%
Which gas is present in the Earth's atmosphere in the highest percentage?
Nitrogen
What role does the Earth's atmosphere play in protecting life on Earth?
Absorbing most of the cosmic rays
Why is the Earth's atmosphere referred to as a dumping ground for many pollutant materials?
It contains trace elements of various gases
How does the Earth's atmosphere contribute to plant photosynthesis?
By being the source of carbon dioxide
What is the relationship between biosphere and ecosystem based on the text?
Ecosystem is a smaller unit of the biosphere.
Which of the following is NOT a part of the biosphere as described in the text?
Mountains
Why are lower atmosphere, oceans, and soils considered part of the biosphere?
Because they actively exchange materials with living organisms.
Which of the following is characteristic of ecosystems according to the text?
Includes interaction between organisms and their environment in a specific area.
In the context of the text, what makes an ecosystem distinct from the biosphere?
Specific zone and interactions between organisms and their environment
Test your knowledge on the composition and functions of Earth's atmosphere, including the percentages of nitrogen, oxygen, and other gases. Learn about the protective role of the atmosphere in absorbing cosmic rays and supporting life.
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