The Earth's Life Support Systems, particularly the water and carbon... Show more
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Niamh Cooke
27/08/2025
Geography
Earth's Life Support Systems
1,358
•
27 Aug 2025
•
Niamh Cooke
@niamhcooke_yelp
The Earth's Life Support Systems, particularly the water and carbon... Show more
Water plays a vital role in Earth's ecosystems and climate regulation. Its importance extends from global temperature moderation to supporting life at the cellular level.
Key functions of water:
Vocabulary: Photosynthesis - The process by which plants use sunlight, water, and carbon dioxide to produce oxygen and energy in the form of sugar.
Example: Plants require water for photosynthesis, which produces oxygen as a byproduct, benefiting all oxygen-breathing organisms on Earth.
The water and carbon cycles are interconnected closed systems at a global scale, forming the basis of Earth's Life Support Systems A Level Geography studies.
Carbon is a fundamental element for life on Earth, playing crucial roles in various biological and geological processes.
Key aspects of carbon:
Definition: Carbon cycle - The biogeochemical cycle by which carbon is exchanged among the biosphere, pedosphere, geosphere, hydrosphere, and atmosphere of the Earth.
The link between carbon and water cycles is evident in the feedback loop triggered by increased atmospheric CO₂. This relationship is crucial for understanding climate change and is a key topic in OCR A Level Geography Earth's Life Support Systems questions.
Understanding the stores of water and carbon on Earth is essential for comprehending the cycles and their impacts on global systems.
Water stores:
Carbon stores:
Highlight: The distribution of water and carbon in various stores is a crucial topic for OCR A Level Geography Earth's Life Support Systems revision.
Vocabulary: Cryosphere - The frozen water part of the Earth system, including sea ice, ice sheets, glaciers, and permafrost.
Understanding the relative sizes and residence times of these stores is important for analyzing the dynamics of the water and carbon cycles.
The water cycle, also known as the hydrological cycle, describes the continuous movement of water within the Earth and atmosphere. It is a key component of Earth's Life Support Systems A Level Geography studies.
Key processes in the water cycle:
Definition: Evapotranspiration - The process by which water is transferred from the land to the atmosphere by evaporation from the soil and other surfaces and by transpiration from plants.
Understanding these processes and their interactions is crucial for analyzing water budgets and predicting changes in water availability, which is essential for answering OCR A Level Geography Earth's Life Support Systems questions.
The carbon cycle consists of both fast (terrestrial) and slow (geological) components, which are interconnected and crucial for Earth's climate regulation.
Terrestrial carbon cycle:
Marine carbon cycle:
Example: During photosynthesis, a tree absorbs CO₂ from the atmosphere and stores it in its biomass. When the tree dies and decomposes, some of this carbon is released back into the atmosphere or soil.
Understanding the interactions between terrestrial and marine carbon cycles is essential for OCR A Level Geography Earth's Life Support Systems revision and for analyzing the impacts of human activities on global carbon balance.
The water and carbon cycles are fundamental to Earth's ecosystems and climate regulation. They are intricately connected and play crucial roles in supporting life on our planet.
Key points:
Highlight: Understanding the water and carbon cycles is crucial for OCR A Level Geography Earth's Life Support Systems revision and exam preparation.
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
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The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
Niamh Cooke
@niamhcooke_yelp
The Earth's Life Support Systems, particularly the water and carbon cycles, are crucial for sustaining life on our planet. These interconnected systems regulate global temperatures, support ecosystems, and provide essential resources for human activities. Understanding these cycles is vital for ... Show more
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Water plays a vital role in Earth's ecosystems and climate regulation. Its importance extends from global temperature moderation to supporting life at the cellular level.
Key functions of water:
Vocabulary: Photosynthesis - The process by which plants use sunlight, water, and carbon dioxide to produce oxygen and energy in the form of sugar.
Example: Plants require water for photosynthesis, which produces oxygen as a byproduct, benefiting all oxygen-breathing organisms on Earth.
The water and carbon cycles are interconnected closed systems at a global scale, forming the basis of Earth's Life Support Systems A Level Geography studies.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Carbon is a fundamental element for life on Earth, playing crucial roles in various biological and geological processes.
Key aspects of carbon:
Definition: Carbon cycle - The biogeochemical cycle by which carbon is exchanged among the biosphere, pedosphere, geosphere, hydrosphere, and atmosphere of the Earth.
The link between carbon and water cycles is evident in the feedback loop triggered by increased atmospheric CO₂. This relationship is crucial for understanding climate change and is a key topic in OCR A Level Geography Earth's Life Support Systems questions.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Understanding the stores of water and carbon on Earth is essential for comprehending the cycles and their impacts on global systems.
Water stores:
Carbon stores:
Highlight: The distribution of water and carbon in various stores is a crucial topic for OCR A Level Geography Earth's Life Support Systems revision.
Vocabulary: Cryosphere - The frozen water part of the Earth system, including sea ice, ice sheets, glaciers, and permafrost.
Understanding the relative sizes and residence times of these stores is important for analyzing the dynamics of the water and carbon cycles.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
The water cycle, also known as the hydrological cycle, describes the continuous movement of water within the Earth and atmosphere. It is a key component of Earth's Life Support Systems A Level Geography studies.
Key processes in the water cycle:
Definition: Evapotranspiration - The process by which water is transferred from the land to the atmosphere by evaporation from the soil and other surfaces and by transpiration from plants.
Understanding these processes and their interactions is crucial for analyzing water budgets and predicting changes in water availability, which is essential for answering OCR A Level Geography Earth's Life Support Systems questions.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
The carbon cycle consists of both fast (terrestrial) and slow (geological) components, which are interconnected and crucial for Earth's climate regulation.
Terrestrial carbon cycle:
Marine carbon cycle:
Example: During photosynthesis, a tree absorbs CO₂ from the atmosphere and stores it in its biomass. When the tree dies and decomposes, some of this carbon is released back into the atmosphere or soil.
Understanding the interactions between terrestrial and marine carbon cycles is essential for OCR A Level Geography Earth's Life Support Systems revision and for analyzing the impacts of human activities on global carbon balance.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
The water and carbon cycles are fundamental to Earth's ecosystems and climate regulation. They are intricately connected and play crucial roles in supporting life on our planet.
Key points:
Highlight: Understanding the water and carbon cycles is crucial for OCR A Level Geography Earth's Life Support Systems revision and exam preparation.
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
You can download the app from Google Play Store and Apple App Store.
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
Smart Tools NEW
Transform this note into: ✓ 50+ Practice Questions ✓ Interactive Flashcards ✓ Full Mock Exam ✓ Essay Outlines
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The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user