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Nitrogen Cycle Explained & Energy Flow in Ecosystems Diagrams for Kids PDF

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Emi

26/09/2025

Biology

Ecosystems Mindmap

741

26 Sept 2025

1 page

Nitrogen Cycle Explained & Energy Flow in Ecosystems Diagrams for Kids PDF

The nitrogen cycle and energy flow in ecosystems are crucial... Show more

%
DECOMPOSERS
AMIONUM INH
O
MARRA
MEROGINNIN AMOSPHER INJ
DENERING
BACERA
ºn
NIRATES (INC3
WROON FUN
00
NORFING
BACTERA
UN N7
THE NITROGEN C

The Nitrogen Cycle and Energy Flow in Ecosystems

This comprehensive diagram provides a detailed explanation of the nitrogen cycle, carbon cycle, and energy flow in ecosystems, along with ecological pyramids. It serves as an excellent resource for students studying these fundamental ecological concepts.

The Nitrogen Cycle

The diagram illustrates the complex process of the nitrogen cycle, showing how nitrogen moves through different forms in the environment.

Highlight: Plants can only absorb nitrogen in the form of nitrates, making them dependent on nitrogen-fixing bacteria to convert atmospheric nitrogen into usable forms in the soil.

Key steps in the nitrogen cycle include:

  1. Nitrogen fixation by bacteria
  2. Absorption of nitrates by plants
  3. Decomposition of organic matter
  4. Denitrification

Example: The Haber Process is mentioned as an industrial method to convert nitrogen into ammonia for fertilizer production.

The Carbon Cycle

The carbon cycle is briefly explained, highlighting the following processes:

  1. Photosynthesis removing carbon dioxide from the atmosphere
  2. Carbon transfer through food chains
  3. Respiration and combustion releasing carbon dioxide
  4. Decomposition of organic matter

Energy Flow Through Ecosystems

The diagram emphasizes the concept of energy flow in ecosystems, explaining how energy is transferred and lost at each trophic level.

Highlight: Only about 10% of energy is passed on at each trophic level, limiting food chains to generally no more than 5 trophic levels.

Ecological Pyramids

The document introduces different types of ecological pyramids:

  1. Pyramids of numbers
  2. Pyramids of biomass
  3. Pyramids of energy

Definition: Biomass is defined as the dry mass of a plant or animal species.

Vocabulary: Trophic levels are explained, including producers, primary consumers, secondary consumers, and tertiary consumers.

The diagram provides visual representations of these pyramids, noting that while pyramids of energy are always triangle-shaped, pyramids of numbers may not always follow this pattern.



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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.

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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.

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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

 

Biology

741

26 Sept 2025

1 page

Nitrogen Cycle Explained & Energy Flow in Ecosystems Diagrams for Kids PDF

The nitrogen cycle and energy flow in ecosystems are crucial processes for life on Earth. This diagram explains key components and interactions within these systems, emphasizing their importance for students.

  • Nitrogen cycle: Illustrates how nitrogen moves through the environment,... Show more

%
DECOMPOSERS
AMIONUM INH
O
MARRA
MEROGINNIN AMOSPHER INJ
DENERING
BACERA
ºn
NIRATES (INC3
WROON FUN
00
NORFING
BACTERA
UN N7
THE NITROGEN C

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The Nitrogen Cycle and Energy Flow in Ecosystems

This comprehensive diagram provides a detailed explanation of the nitrogen cycle, carbon cycle, and energy flow in ecosystems, along with ecological pyramids. It serves as an excellent resource for students studying these fundamental ecological concepts.

The Nitrogen Cycle

The diagram illustrates the complex process of the nitrogen cycle, showing how nitrogen moves through different forms in the environment.

Highlight: Plants can only absorb nitrogen in the form of nitrates, making them dependent on nitrogen-fixing bacteria to convert atmospheric nitrogen into usable forms in the soil.

Key steps in the nitrogen cycle include:

  1. Nitrogen fixation by bacteria
  2. Absorption of nitrates by plants
  3. Decomposition of organic matter
  4. Denitrification

Example: The Haber Process is mentioned as an industrial method to convert nitrogen into ammonia for fertilizer production.

The Carbon Cycle

The carbon cycle is briefly explained, highlighting the following processes:

  1. Photosynthesis removing carbon dioxide from the atmosphere
  2. Carbon transfer through food chains
  3. Respiration and combustion releasing carbon dioxide
  4. Decomposition of organic matter

Energy Flow Through Ecosystems

The diagram emphasizes the concept of energy flow in ecosystems, explaining how energy is transferred and lost at each trophic level.

Highlight: Only about 10% of energy is passed on at each trophic level, limiting food chains to generally no more than 5 trophic levels.

Ecological Pyramids

The document introduces different types of ecological pyramids:

  1. Pyramids of numbers
  2. Pyramids of biomass
  3. Pyramids of energy

Definition: Biomass is defined as the dry mass of a plant or animal species.

Vocabulary: Trophic levels are explained, including producers, primary consumers, secondary consumers, and tertiary consumers.

The diagram provides visual representations of these pyramids, noting that while pyramids of energy are always triangle-shaped, pyramids of numbers may not always follow this pattern.

We thought you’d never ask...

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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.

Where can I download the Knowunity app?

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Is Knowunity really free of charge?

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Can't find what you're looking for? Explore other subjects.

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App Store

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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