Ever wondered why some countries struggle with hunger whilst others... Show more
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Responding to change (a2 only)
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Cell biology
Organisms respond to changes in their internal and external environments (a-level only)
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Britain & the wider world: 1745 -1901
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2d religious conflict and the church in england, c1529-c1570
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1f industrialisation and the people: britain, c1783-1885
1c the tudors: england, 1485-1603
2m wars and welfare: britain in transition, 1906-1957
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11 Dec 2025
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Simple study and revision notes ❤️
@studysimplegirl
Ever wondered why some countries struggle with hunger whilst others... Show more





The world's pretty unfair when it comes to food distribution. High Income Countries (HICs) like the UK consume over 3000 calories per day - so much that obesity is becoming a massive problem. Meanwhile, Low Income Countries (LICs) struggle with less than 2000 calories daily, leading to undernourishment, disease, and reduced productivity.
Food demand keeps rising because our global population is exploding and people want more variety in their diets. In the UK, we've become obsessed with eating exotic foods year-round, even when our climate can't grow them naturally.
This creates a proper dilemma. Whilst importing food from LICs gives them income and jobs, it also means they're using precious water on our crops instead of feeding their own people. Plus, we waste loads of this imported food just because it doesn't look perfect.
Quick Tip: Remember that seasonal and organic foods aren't just trendy - they're part of solving global food inequality!

Your avocado toast has a carbon footprint that's contributing to climate change. Food transportation releases CO2, which melts glaciers, raises sea levels, and causes forest fires - not exactly worth it for a few strawberries in January!
Agribusiness (massive commercial farming) creates its own problems. These huge farms cause deforestation, pump chemicals into the environment that kill helpful insects, and often treat livestock terribly. It's efficient but pretty harsh on the planet.
Food supply faces constant threats that you might not think about. Extreme weather destroys crops, conflicts ruin farmland, and poverty means farmers can't afford proper resources. Even pests and diseases can wipe out entire harvests.
When these factors combine, we get food insecurity - leading to famine, undernutrition, soil erosion, and skyrocketing food prices that hurt the poorest people most.
Reality Check: Climate change isn't just a future problem - it's affecting food supplies right now!

Scientists and farmers are getting pretty creative with food production methods. Irrigation systems help crops grow in dry areas using dams or simple water tanks for poorer farmers. Even cooler, aeroponics grows plants in mid-air using nutrient-rich water mists!
Hydroponics takes plants out of soil completely, growing them in nutrient-packed water instead. The Green Revolution focuses on sustainable farming, whilst biotechnology creates GM crops that produce higher yields with fewer chemicals.
Appropriate technology is brilliant because it uses cheap, locally available materials without putting people out of jobs. Take Bangladesh's rice and fish farming - fish fertilise the plants, eat the pests, and you get two products from the same space.
This system creates employment, prevents deforestation, uses no harmful chemicals, and actually helps the environment. It's proof that simple solutions often work better than complicated ones!
Success Story: Bangladesh's rice-fish farming doubles food production whilst protecting the environment - genius!

Almeria, Spain shows both the potential and problems of modern farming. This region has 100 square miles of plastic greenhouses using hydroponics, mostly run by African migrants. It produces cheap fruit and vegetables all year round and provides loads of employment.
But there's a dark side - the plastic seriously damages ecosystems. When it's burnt, it releases toxins, and non-biodegradable litter covers the landscape. It's a classic example of solving one problem whilst creating others.
Sustainable alternatives are emerging everywhere. Organic farming avoids harmful chemicals, permaculture copies natural ecosystems, and urban farms grow food in cities to reduce transport distances (food miles).
These methods prove that we can feed the world without destroying it - we just need to be smarter about how we approach large-scale agricultural development.
Think About It: Would you rather have cheap year-round strawberries or a healthier planet? The choice might not be as simple as it seems!
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.
Quotes from every main character
App Store
Google Play
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
Simple study and revision notes ❤️
@studysimplegirl
Ever wondered why some countries struggle with hunger whilst others deal with obesity? Food security is one of the biggest challenges facing our world today, affecting everything from global politics to climate change.

Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
The world's pretty unfair when it comes to food distribution. High Income Countries (HICs) like the UK consume over 3000 calories per day - so much that obesity is becoming a massive problem. Meanwhile, Low Income Countries (LICs) struggle with less than 2000 calories daily, leading to undernourishment, disease, and reduced productivity.
Food demand keeps rising because our global population is exploding and people want more variety in their diets. In the UK, we've become obsessed with eating exotic foods year-round, even when our climate can't grow them naturally.
This creates a proper dilemma. Whilst importing food from LICs gives them income and jobs, it also means they're using precious water on our crops instead of feeding their own people. Plus, we waste loads of this imported food just because it doesn't look perfect.
Quick Tip: Remember that seasonal and organic foods aren't just trendy - they're part of solving global food inequality!

Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Your avocado toast has a carbon footprint that's contributing to climate change. Food transportation releases CO2, which melts glaciers, raises sea levels, and causes forest fires - not exactly worth it for a few strawberries in January!
Agribusiness (massive commercial farming) creates its own problems. These huge farms cause deforestation, pump chemicals into the environment that kill helpful insects, and often treat livestock terribly. It's efficient but pretty harsh on the planet.
Food supply faces constant threats that you might not think about. Extreme weather destroys crops, conflicts ruin farmland, and poverty means farmers can't afford proper resources. Even pests and diseases can wipe out entire harvests.
When these factors combine, we get food insecurity - leading to famine, undernutrition, soil erosion, and skyrocketing food prices that hurt the poorest people most.
Reality Check: Climate change isn't just a future problem - it's affecting food supplies right now!

Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Scientists and farmers are getting pretty creative with food production methods. Irrigation systems help crops grow in dry areas using dams or simple water tanks for poorer farmers. Even cooler, aeroponics grows plants in mid-air using nutrient-rich water mists!
Hydroponics takes plants out of soil completely, growing them in nutrient-packed water instead. The Green Revolution focuses on sustainable farming, whilst biotechnology creates GM crops that produce higher yields with fewer chemicals.
Appropriate technology is brilliant because it uses cheap, locally available materials without putting people out of jobs. Take Bangladesh's rice and fish farming - fish fertilise the plants, eat the pests, and you get two products from the same space.
This system creates employment, prevents deforestation, uses no harmful chemicals, and actually helps the environment. It's proof that simple solutions often work better than complicated ones!
Success Story: Bangladesh's rice-fish farming doubles food production whilst protecting the environment - genius!

Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Almeria, Spain shows both the potential and problems of modern farming. This region has 100 square miles of plastic greenhouses using hydroponics, mostly run by African migrants. It produces cheap fruit and vegetables all year round and provides loads of employment.
But there's a dark side - the plastic seriously damages ecosystems. When it's burnt, it releases toxins, and non-biodegradable litter covers the landscape. It's a classic example of solving one problem whilst creating others.
Sustainable alternatives are emerging everywhere. Organic farming avoids harmful chemicals, permaculture copies natural ecosystems, and urban farms grow food in cities to reduce transport distances (food miles).
These methods prove that we can feed the world without destroying it - we just need to be smarter about how we approach large-scale agricultural development.
Think About It: Would you rather have cheap year-round strawberries or a healthier planet? The choice might not be as simple as it seems!
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.
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Quotes from every main character
App Store
Google Play
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