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Carbon Cycle Video Lecture - Biology Class 12 - NEET

157 videos|398 docs|239 tests

FAQs on Carbon Cycle Video Lecture - Biology Class 12 - NEET

1. What is the carbon cycle?
The carbon cycle refers to the natural process by which carbon is exchanged between the atmosphere, oceans, land, and living organisms. It involves various processes such as photosynthesis, respiration, decomposition, and combustion, all of which contribute to the movement of carbon in different forms.
2. How does the carbon cycle work?
The carbon cycle begins with carbon dioxide (CO2) in the atmosphere, which is absorbed by plants through photosynthesis. Plants use this carbon to produce food and release oxygen as a byproduct. Animals then consume these plants, incorporating the carbon into their bodies. When plants and animals die, their remains decompose, releasing carbon back into the atmosphere or into the soil. Additionally, the burning of fossil fuels and deforestation also release carbon dioxide into the atmosphere.
3. What are the main components of the carbon cycle?
The main components of the carbon cycle include the atmosphere, oceans, land, and living organisms. Carbon dioxide in the atmosphere is absorbed by plants through photosynthesis, and animals obtain carbon by consuming plants or other animals. The carbon is then released back into the atmosphere through respiration, decomposition, or combustion. The oceans also play a significant role in the carbon cycle by absorbing and releasing carbon dioxide.
4. How does human activity impact the carbon cycle?
Human activity has greatly affected the carbon cycle, primarily through the burning of fossil fuels such as coal, oil, and natural gas. This releases large amounts of carbon dioxide into the atmosphere, contributing to the greenhouse effect and global warming. Deforestation is another significant factor as it reduces the number of trees available to absorb carbon dioxide. Additionally, activities such as industrial processes and land-use changes can alter the balance of carbon in the cycle.
5. What are the consequences of an imbalanced carbon cycle?
An imbalanced carbon cycle can have severe consequences for the planet. The increased levels of carbon dioxide in the atmosphere contribute to global warming, leading to climate change and its associated impacts such as rising sea levels, extreme weather events, and habitat loss. It also affects the pH level of the oceans, leading to ocean acidification, which can harm marine life and ecosystems. It is crucial to maintain a balanced carbon cycle to mitigate these negative effects and ensure the sustainability of our planet.
157 videos|398 docs|239 tests

Timeline

01:15 Hydrologic Cycle
02:13 Clouds
03:06 Runoff
03:41 Oceans
04:25 Evapotranspiration
05:12 Carbon Cycle
05:48 Plants
06:40 Fossil Fuels
07:12 Oceans
07:35 Global Warming
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