Learning objective
Link the increase in atmospheric oxygen to the development of more complex life.
Read the explanation, check the common trap, then practise with flashcards and questions.
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Topic
The composition and evolution of the Earth's atmosphere
Subtopic
How oxygen increased
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Quick explanation
Link the increase in atmospheric oxygen to the development of more complex life
- This point belongs to The composition and evolution of the Earth's atmosphere, especially How oxygen increased.
- You need to be able to link the increase in atmospheric oxygen to the development of more complex life.
- The key ideas to know are oxygen.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Key concepts
Why it matters
This objective helps connect How oxygen increased to exam-style questions, flashcards, and revision notes for The composition and evolution of the Earth's atmosphere.
Quick student answer
What should you know about increase in atmospheric oxygen to the development of more complex life?
Direct answer
In Chemistry, this page helps you answer questions about increase in atmospheric oxygen to the development of more complex life within The composition and evolution of the Earth's atmosphere. Focus on the key process, correct scientific terms, and how the idea links to exam-style questions. Key terms to check are atmospheric oxygen and photosynthesis.
Key terms
- atmospheric oxygen: The oxygen present in the Earth's atmosphere, which increased due to photosynthesis and is essential for the development of complex life.
- photosynthesis: The process by which algae and plants convert carbon dioxide and water into glucose and oxygen using sunlight, contributing to the increase of atmospheric oxygen.
Common trap
Linking Oxygen Increase to Life: To fix this, students should focus on the role of photosynthesis in producing oxygen and how this oxygen enabled the evolution of more complex organisms.
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Revision notestopic notes
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Open revision notesRelated learning objectives
- Recall that the Earth's atmosphere is about 80 percent nitrogen.
The proportions of different gases in the atmosphere
- Recall that the Earth's atmosphere is about 20 percent oxygen.
The proportions of different gases in the atmosphere
- Recall that the Earth's atmosphere contains small proportions of other gases including carbon dioxide, water vapour and noble gases.
The proportions of different gases in the atmosphere
- Interpret simple data showing the proportions of gases in the atmosphere.
The proportions of different gases in the atmosphere
- Distinguish the major gases in the present atmosphere from trace atmospheric gases.
The proportions of different gases in the atmosphere