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Zorluk: KolayClimate Change, Global Warming and Ozone Layer Depletion

Which of the following environmental impacts are directly associated with the depletion of the stratospheric ozone layer? Select all correct options.

  1. Increased exposure to harmful solar UV-B radiation leading to higher rates of skin cancer and cataractsCevap
  2. B
    Immediate decrease in global mean sea levels due to atmospheric thermal cooling
  3. Inhibition of biological productivity and photosynthetic activity in marine phytoplanktonCevap
  4. D
    Direct elimination of tropospheric greenhouse gas emissions from fossil fuel combustion

Cevap

The correct options are those describing increased skin cancer and cataract rates from UV-B radiation, and the disruption of marine phytoplankton productivity.
The stratospheric ozone layer filters solar UV-B radiation. Its depletion results in enhanced ground-level UV-B intensity, causing human health risks like skin cancer and damage to aquatic ecosystems by harming photosynthetic phytoplankton.

Adım Adım Çözüm

1
Identify the primary protective role of stratospheric ozone.
Stratospheric ozone acts as a shield absorbing harmful ultraviolet-B (UV-B) solar radiation.
Understanding ozone function clarifies the consequences when the shield is depleted.
2
Evaluate biological and ecological consequences of increased UV-B reaching Earth.
Higher UV-B exposure leads to physiological damage in humans (skin cancers, cataracts) and damages primary producers like phytoplankton in marine environments.
Phytoplankton are sensitive to UV radiation, which impairs their photosynthetic capability.

Anahtar Kavram

Impacts of Stratospheric Ozone Depletion
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Konular

Climate Change, Global Warming and Ozone Layer Depletion