Subjects
Careers
Maths
Biology
Chemistry
English Lang.
History
Homeostasis and response
Energy transfers (a2 only)
Infection and response
Responding to change (a2 only)
Cell biology
Organisms respond to changes in their internal and external environments (a-level only)
Organisms exchange substances with their environment
Biological molecules
Organisation
Substance exchange
Bioenergetics
Genetic information & variation
Inheritance, variation and evolution
Ecology
Cells
Show all topics
2m wars and welfare: britain in transition, 1906-1957
World war two & the holocaust
Inter-war germany
1f industrialisation and the people: britain, c1783-1885
2d religious conflict and the church in england, c1529-c1570
Medieval period: 1066 -1509
Britain & the wider world: 1745 -1901
The cold war
1c the tudors: england, 1485-1603
2o democracy and nazism: germany, 1918-1945
1l the quest for political stability: germany, 1871-1991
2n revolution and dictatorship: russia, 1917-1953
2s the making of modern britain, 1951-2007
World war one
Britain: 1509 -1745
Show all topics
4
0
Lauren Male
10/02/2023
Biology
Biology Topic 7 Ecology Part 2: Environmental change, the Water Cycle and the Carbon Cycle
The water and carbon cycles are fundamental natural processes that maintain life on Earth, with environmental changes significantly impacting species distribution. These cycles demonstrate how elements and compounds move through ecosystems, affecting biodiversity and ecological balance. How does climate change affect species distribution is evident through various environmental factors including temperature changes, water availability, and atmospheric composition.
10/02/2023
133
The water cycle, also known as the hydrologic cycle, is a continuous process that recycles water throughout Earth's systems. This cycle is fundamental to understanding the process and importance of the water cycle.
The main steps of the water cycle include:
Evaporation: Solar energy causes water to evaporate from land and sea surfaces, turning it into water vapor. Plants also contribute through transpiration.
Condensation: As warm water vapor rises, it cools and condenses to form clouds.
Precipitation: Water falls from clouds as rain, snow, or hail, providing fresh water for plants and animals.
Runoff: Water flows back to the sea, where the cycle begins anew.
Vocabulary: Transpiration is the process by which water evaporates from plants, primarily through their leaves.
Highlight: The water cycle is a continuous process that plays a crucial role in Earth's climate and ecosystems.
Ecosystems rely on the continuous cycling of elements and nutrients to maintain stability. This process is essential for understanding the role of carbon cycle in stable ecosystems.
Key points about nutrient cycling:
Definition: Decay is the process by which dead organisms are broken down by other organisms, returning nutrients to the ecosystem.
Factors affecting decay:
Highlight: In a stable community, the materials taken from the soil by plants are balanced by those returned through decay, creating a constant cycle.
The carbon cycle is a fundamental biogeochemical cycle that describes the movement of carbon through Earth's systems. Understanding why is the carbon cycle important is crucial for comprehending global climate dynamics and ecosystem functioning.
Key steps in the carbon cycle:
Photosynthesis: Green plants and algae remove CO₂ from the atmosphere, using it to produce glucose and other organic compounds.
Respiration: Plants, algae, and animals return some carbon to the atmosphere as CO₂ through respiration.
Food chain transfer: Carbon moves through the food chain as organisms consume others.
Decomposition: When organisms die, detritus feeders and microorganisms break down their remains, releasing CO₂ back into the atmosphere.
Vocabulary: Detritus feeders are organisms that consume dead plant and animal matter.
Highlight: The carbon cycle demonstrates how carbon and energy are constantly cycled through ecosystems, from the air, through food chains, and back to the air again.
Human activities have significantly altered the natural carbon cycle, leading to global climate change. Understanding how do humans impact the carbon cycle is crucial for addressing environmental challenges.
Key human impacts on the carbon cycle:
Combustion of fossil fuels: Burning coal, oil, and natural gas releases stored carbon back into the atmosphere as CO₂.
Deforestation: Reducing forest cover decreases the Earth's capacity to absorb CO₂ through photosynthesis.
Land-use changes: Converting natural ecosystems to agricultural or urban areas alters carbon storage and release patterns.
Industrial processes: Many manufacturing processes release additional CO₂ into the atmosphere.
Example: The burning of fossil fuels is a significant contributor to the increase in atmospheric CO₂ levels, accelerating global warming.
Highlight: Understanding and mitigating human impacts on the carbon cycle is essential for addressing climate change and maintaining ecosystem stability.
The carbon cycle diagram shows how carbon moves through various processes including combustion carbon cycle and decomposition carbon cycle.
Highlight: Human activities significantly impact the carbon cycle through fossil fuel combustion.
Example: Carbon moves from air through food chains via plants, animals, detritus feeders, and microorganisms before returning to the atmosphere.
Definition: Fossil fuels are formed from the remains of ancient plants and animals over millions of years.
8
63
9th
Info of Fossils 2023 PDF
2023 PDF
9
136
9th/10th
Water and It’s Unique Properties
Properties of water, polarity, water cycle.
71
4838
10/11
Science
Flash cards
12
743
10/11
B4-The Carbon Cycle. Biology
describes how the carbon cycle works
3
144
9th
Carbon Cycle Notes
diagram of Carbon Cycle and how it relates in the real world. Explains greenhouse effect and disruption in the carbon cycle
1
56
9th/10th
Prokaryotic cells VS. Eukaryotic cells
The differences between prokaryotic and eukaryotic cells are in the notes. so are the meaning of the words. The colors I used don’t mean anything, It’s a way for me to better organize my notes and they’re not in boring gray so I’ll want to read it more
Average app rating
Pupils love Knowunity
In education app charts in 17 countries
Students have uploaded notes
iOS User
Philip, iOS User
Lena, iOS user
Lauren Male
@laurenmale
The water and carbon cycles are fundamental natural processes that maintain life on Earth, with environmental changes significantly impacting species distribution. These cycles demonstrate how elements and compounds move through ecosystems, affecting biodiversity and ecological balance. How does climate
... Show more
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 hydrologic cycle, is a continuous process that recycles water throughout Earth's systems. This cycle is fundamental to understanding the process and importance of the water cycle.
The main steps of the water cycle include:
Evaporation: Solar energy causes water to evaporate from land and sea surfaces, turning it into water vapor. Plants also contribute through transpiration.
Condensation: As warm water vapor rises, it cools and condenses to form clouds.
Precipitation: Water falls from clouds as rain, snow, or hail, providing fresh water for plants and animals.
Runoff: Water flows back to the sea, where the cycle begins anew.
Vocabulary: Transpiration is the process by which water evaporates from plants, primarily through their leaves.
Highlight: The water cycle is a continuous process that plays a crucial role in Earth's climate and ecosystems.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Ecosystems rely on the continuous cycling of elements and nutrients to maintain stability. This process is essential for understanding the role of carbon cycle in stable ecosystems.
Key points about nutrient cycling:
Definition: Decay is the process by which dead organisms are broken down by other organisms, returning nutrients to the ecosystem.
Factors affecting decay:
Highlight: In a stable community, the materials taken from the soil by plants are balanced by those returned through decay, creating a constant cycle.
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 is a fundamental biogeochemical cycle that describes the movement of carbon through Earth's systems. Understanding why is the carbon cycle important is crucial for comprehending global climate dynamics and ecosystem functioning.
Key steps in the carbon cycle:
Photosynthesis: Green plants and algae remove CO₂ from the atmosphere, using it to produce glucose and other organic compounds.
Respiration: Plants, algae, and animals return some carbon to the atmosphere as CO₂ through respiration.
Food chain transfer: Carbon moves through the food chain as organisms consume others.
Decomposition: When organisms die, detritus feeders and microorganisms break down their remains, releasing CO₂ back into the atmosphere.
Vocabulary: Detritus feeders are organisms that consume dead plant and animal matter.
Highlight: The carbon cycle demonstrates how carbon and energy are constantly cycled through ecosystems, from the air, through food chains, and back to the air again.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Human activities have significantly altered the natural carbon cycle, leading to global climate change. Understanding how do humans impact the carbon cycle is crucial for addressing environmental challenges.
Key human impacts on the carbon cycle:
Combustion of fossil fuels: Burning coal, oil, and natural gas releases stored carbon back into the atmosphere as CO₂.
Deforestation: Reducing forest cover decreases the Earth's capacity to absorb CO₂ through photosynthesis.
Land-use changes: Converting natural ecosystems to agricultural or urban areas alters carbon storage and release patterns.
Industrial processes: Many manufacturing processes release additional CO₂ into the atmosphere.
Example: The burning of fossil fuels is a significant contributor to the increase in atmospheric CO₂ levels, accelerating global warming.
Highlight: Understanding and mitigating human impacts on the carbon cycle is essential for addressing climate change and maintaining ecosystem stability.
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 diagram shows how carbon moves through various processes including combustion carbon cycle and decomposition carbon cycle.
Highlight: Human activities significantly impact the carbon cycle through fossil fuel combustion.
Example: Carbon moves from air through food chains via plants, animals, detritus feeders, and microorganisms before returning to the atmosphere.
Definition: Fossil fuels are formed from the remains of ancient plants and animals over millions of years.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Environmental changes significantly impact the distribution of organisms, altering where species can survive and thrive. This phenomenon is crucial in understanding how climate change affects species distribution.
Definition: Species distribution refers to the geographical area where a particular species can be found.
Three main factors influence species distribution:
Example: The distribution of bird species is changing due to rising average temperatures, demonstrating the impact of environmental changes on species distribution.
These environmental changes can be caused by:
Highlight: Global warming, primarily caused by human activity, is a significant driver of changes in species distribution.
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
