1. In the Northern Hemisphere, the approximate proportion of water to land is about 40% water and 60% land. This is due to the large landmasses like North America, Europe, Asia, and parts of Africa. In contrast, the Southern Hemisphere has a significantly higher proportion of water, with around 80% watRead more

    In the Northern Hemisphere, the approximate proportion of water to land is about 40% water and 60% land. This is due to the large landmasses like North America, Europe, Asia, and parts of Africa. In contrast, the Southern Hemisphere has a significantly higher proportion of water, with around 80% water and only 20% land. The Southern Hemisphere includes smaller landmasses such as South America, Australia, and Antarctica, but is dominated by vast expanses of ocean, including the Pacific, Atlantic, and Indian Oceans. This distribution affects global climate patterns, biodiversity, and human activities across the hemispheres.

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  2. Despite being shown as distinct entities on maps, the world's oceans are interconnected, with no physical barriers separating them. The concept of different oceans, such as the Pacific or Atlantic, is based on convention rather than natural divisions. Ocean currents, winds, and marine life move betwRead more

    Despite being shown as distinct entities on maps, the world’s oceans are interconnected, with no physical barriers separating them. The concept of different oceans, such as the Pacific or Atlantic, is based on convention rather than natural divisions. Ocean currents, winds, and marine life move between these bodies of water, making them part of a continuous global ocean system. This interconnectedness plays a crucial role in regulating Earth’s climate, supporting marine ecosystems, and facilitating human activities like shipping and fishing.

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  3. Although water is abundant on Earth, 97% of it is saltwater, which is unfit for direct consumption or agriculture. Only 3% is freshwater, with much of it trapped in glaciers and ice caps. The small amount available for human use is unevenly distributed across regions. Population growth, pollution, aRead more

    Although water is abundant on Earth, 97% of it is saltwater, which is unfit for direct consumption or agriculture. Only 3% is freshwater, with much of it trapped in glaciers and ice caps. The small amount available for human use is unevenly distributed across regions. Population growth, pollution, and unsustainable water management further strain this limited freshwater supply, leading to water scarcity. Additionally, climate change impacts rainfall patterns and water availability, intensifying the global water crisis.

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  4. Water conservation methods include repairing leaks, installing water-efficient appliances, using low-flow faucets, and practicing rainwater harvesting. Reusing greywater for gardening and cleaning is also effective. At home, I've seen people turn off taps while brushing teeth, use buckets instead ofRead more

    Water conservation methods include repairing leaks, installing water-efficient appliances, using low-flow faucets, and practicing rainwater harvesting. Reusing greywater for gardening and cleaning is also effective. At home, I’ve seen people turn off taps while brushing teeth, use buckets instead of hoses, and fix leaking pipes. Schools promote water conservation through awareness campaigns, while cities implement rainwater harvesting systems. In my community, some houses are equipped with rainwater tanks, and public spaces encourage water-saving behaviors through signage and education programs.

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  5. Climate change significantly affects oceans by causing sea levels to rise due to melting polar ice caps, threatening coastal regions with flooding. Warmer ocean temperatures disrupt marine life, leading to coral bleaching and species migration. Ocean acidification, from increased carbon dioxide absoRead more

    Climate change significantly affects oceans by causing sea levels to rise due to melting polar ice caps, threatening coastal regions with flooding. Warmer ocean temperatures disrupt marine life, leading to coral bleaching and species migration. Ocean acidification, from increased carbon dioxide absorption, harms marine organisms, especially those with calcium carbonate shells. Altered ocean currents also impact global weather patterns, further destabilizing ecosystems.

    For more NCERT Solutions for Class 6 Social Science Chapter 2 Oceans and Continents Extra Questions & Answer:

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