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What is the significance of upwelling zones for marine ecosystems?
It is responsible for uniformity of temperature in the ocean to support marine life.
It brings nutrients from deeper zones to relatively nutrient poor ocean surface thus increasing marine productivity.
It is responsible for uniform oxygenation of marine waters thus increasing marine productivity.
It helps in circulating decomposers from the bottom of ocean to surface for proper decomposition of dead material on the surface.
Answers (1)
Upwelling zones play a crucial role in marine ecosystems by bringing nutrient-rich water from the deeper zones of the ocean to the relatively nutrient-poor surface waters. This vertical movement of water is driven by factors such as wind patterns, ocean currents, and the geography of the coastline.
The nutrient-rich water that is upwelled from the deeper zones contains essential elements like nitrates, phosphates, and trace elements. These nutrients are vital for the growth and productivity of phytoplankton and other primary producers in the ocean. Phytoplankton form the base of the marine food web, and their increased growth leads to higher productivity throughout the ecosystem.
Upwelling zones are known to support highly productive marine ecosystems, as the availability of nutrients promotes the growth of phytoplankton, which in turn supports a diverse range of zooplankton, fish, marine mammals, and other organisms. These areas often serve as productive fishing grounds due to the abundance of nutrients and the high concentration of marine life they support.
Therefore, the significance of upwelling zones for marine ecosystems is that they bring nutrients from deeper zones to the relatively nutrient-poor ocean surface, resulting in increased marine productivity. Hence, the correct answer is option 2.
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