Class 9 Exam > Class 9 Videos > Biology for Class 9 > Fun Video: The Hydrologic and Carbon Cycles
Fun Video: The Hydrologic and Carbon Cycles Video Lecture | Biology for Class 9
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FAQs on Fun Video: The Hydrologic and Carbon Cycles Video Lecture - Biology for Class 9
| 1. What is the hydrologic cycle? |  |
Ans. The hydrologic cycle, also known as the water cycle, is the continuous movement of water on, above, and below the Earth's surface. It involves processes like evaporation, condensation, precipitation, and runoff, which maintain the balance of water in different reservoirs like oceans, atmosphere, lakes, rivers, and groundwater.
| 2. How does the hydrologic cycle affect weather patterns? | |
Ans. The hydrologic cycle plays a crucial role in shaping weather patterns. When water evaporates from the Earth's surface, it rises into the atmosphere and forms clouds. These clouds then release the water as precipitation, which can be in the form of rain, snow, or hail. This precipitation contributes to the formation of storms, hurricanes, and other weather phenomena.
| 3. What is the carbon cycle? | |
Ans. The carbon cycle refers to the continuous movement of carbon between the Earth's atmosphere, land, oceans, and living organisms. It involves processes like photosynthesis, respiration, decomposition, and combustion, which influence the concentration of carbon dioxide (CO2) in the atmosphere, affecting climate and ecosystem dynamics.
| 4. How do human activities impact the carbon cycle? | |
Ans. Human activities, such as burning fossil fuels, deforestation, and industrial processes, release significant amounts of carbon dioxide into the atmosphere. These activities contribute to the increase in greenhouse gas concentrations, leading to global warming and climate change. Additionally, deforestation reduces the Earth's capacity to absorb CO2 through photosynthesis, further exacerbating the carbon cycle imbalance.
| 5. What is the significance of understanding the hydrologic and carbon cycles? | |
Ans. Understanding the hydrologic and carbon cycles is crucial for comprehending the Earth's natural processes and their impact on climate and ecosystems. It helps scientists and policymakers develop strategies to mitigate the effects of climate change, manage water resources effectively, and promote sustainable practices. Additionally, studying these cycles aids in predicting and understanding natural disasters such as floods and droughts.
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Nov 23, 2024 Last updated |
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