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Questions and Answers
What is the biosphere?
What is the biosphere?
Which term is another name for the biosphere?
Which term is another name for the biosphere?
Which system is the biosphere considered to be in terms of matter?
Which system is the biosphere considered to be in terms of matter?
What is the main source of energy for the biosphere?
What is the main source of energy for the biosphere?
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What is the biosphere postulated to have evolved from?
What is the biosphere postulated to have evolved from?
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Which process in the nitrogen cycle involves the conversion of atmospheric nitrogen into a form that can be used by plants?
Which process in the nitrogen cycle involves the conversion of atmospheric nitrogen into a form that can be used by plants?
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What is the largest source of nitrogen on Earth?
What is the largest source of nitrogen on Earth?
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Why is nitrogen availability important for ecosystems?
Why is nitrogen availability important for ecosystems?
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Which human activity has significantly impacted the global nitrogen cycle?
Which human activity has significantly impacted the global nitrogen cycle?
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Why is atmospheric nitrogen not readily available for biological use?
Why is atmospheric nitrogen not readily available for biological use?
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Study Notes
The Biosphere
- The biosphere is the global sum of all ecosystems on Earth, encompassing all living organisms and their environments.
Alternative Term
- The term "ecosphere" is another name for the biosphere.
Closed System
- The biosphere is considered a closed system in terms of matter, meaning that matter is recycled and reused within the system.
Energy Source
- The main source of energy for the biosphere is solar energy from the sun.
Evolution
- The biosphere is postulated to have evolved from a primordial soup of organic molecules.
Nitrogen Cycle
- Nitrogen fixation is the process that involves the conversion of atmospheric nitrogen into a form that can be used by plants.
Nitrogen Source
- The largest source of nitrogen on Earth is the atmosphere, which is composed of about 78% nitrogen gas.
Nitrogen Availability
- Nitrogen availability is important for ecosystems because it is a essential nutrient for plant growth and development.
Human Impact
- The human activity that has significantly impacted the global nitrogen cycle is the widescale use of synthetic fertilizers in agriculture.
Atmospheric Nitrogen
- Atmospheric nitrogen is not readily available for biological use because it is in the form of nitrogen gas (N2), which is inaccessible to most living organisms.
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Description
Test your knowledge about the biosphere and its key concepts with this quiz! Explore topics such as ecosystems, the zone of life on Earth, and the closed system nature of the biosphere. Challenge yourself and see how well you understand this vital component of our planet.
