Question

What does ozone-depleting chemicals, HGs, contribute to?
A. Global Warming
B. Eutrophication
C. Deforestation
D. Urbanization

Answer 1

Hint:Ozone loss is a significant environmental threat because it increases the amount of ultraviolet (UV) radiation touching the surface of the Earth, increasing the rate of damage to skin cancer, eye cataracts, and the genetic and immune system.

Complete answer:Global warming- Relating to the long-term spike in the planet's temperatures, is a component of climate change. It is caused by elevated atmospheric greenhouse gas emissions, primarily from human activities such as fossil fuel combustion, deforestation, and farming.
Eutrophication- Due to the increased availability of one or more constraining growth factors available for photosynthesis, such as sunlight, carbon dioxide, and nutrient fertilizers, eutrophication is characterized by excessive plant and algal growth. When lakes mature, eutrophication naturally happens over decades and is flooded with sediments. However, through both point-source discharges and non-point loadings of nutrients such as nitrogen and phosphorus, human activities have increased the rate and degree of eutrophication of marine environments, with drastic implications for drinking water supplies, wetlands, and recreational bodies of water.
Deforestation- Agricultural growth, wood production (e.g. logging or wood harvesting for domestic fuel or charcoal), and development growth, such as road construction and urbanization, are direct causes of deforestation. A single direct reason for deforestation is seldom present.
Urbanization- It refers to the demographic change from rural to urban areas, the decline in the proportion of people living in rural areas, and the ways in which communities adjust to this shift. As more people begin to live and work in central areas, it is primarily the mechanism by which towns and cities are created and become larger.

Hence the correct answer is option A, Global warming.

Note: Substances that deplete ozone are man-made gases that kill ozone once they enter the layer of ozone. In the upper atmosphere, the ozone layer rests and decreases the amount of toxic ultraviolet radiation from the sun that enters Earth. Ultraviolet radiation can affect both humans and the environment in a detrimental way. For example, skin cancer and cataracts are caused, plant growth is distorted and the marine environment is impaired.