DOL_ES Effects of Pollution on Glacial Melting

How does pollution contribute to the melting of glaciers and ice caps?

• 1. By increasing the albedo (reflectivity) of ice surfaces

• By reducing the absorption of sunlight by ice

• By producing greenhouse gases that raise temperatures

• By promoting the formation of new ice layers

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A research team studying a glacier in a remote region discovers a significant increase in its rate of melting over the past decade. Analysis of ice core samples reveals high concentrations of industrial pollutants, including soot and heavy metals. What is the most likely effect of pollution on glacial melting in this scenario?

• 4. Reduced melting due to increased reflectivity

• Increased melting due to the absorption of sunlight

• Stable melting rates unaffected by pollution

• No correlation between pollution and glacial melting

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Dillon is a marine biologist studying the impact of pollution on aquatic ecosystems. He conducts experiments in a controlled environment and observes a decline in the population of certain fish species. The water samples from the experimental tanks show high levels of pollutants, including heavy metals and pesticides. What is the most likely effect of pollution on aquatic viability?

• Disruption of food chains and loss of biodiversity

• Increased oxygen levels leading to hypoxia

• Enhanced growth of aquatic plants due to nutrient enrichment

• Decreased water salinity affecting marine habitats

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 A team of scientists is studying a polluted river and its impact on aquatic life. They collect water samples from different sections of the river and measure various water quality parameters. The table below shows the pH levels and dissolved oxygen (DO) concentrations in the water samples collected from the river:

Based on the data, what is the likely effect of pollution on aquatic viability in the river?

• 1. Increased pH levels and DO concentrations

• Decreased pH levels and DO concentrations

• Stable pH levels and DO concentrations

• No correlation between pollution and pH/DO levels

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 Quick Write: 

     Discuss the impact of pollution on glacial and ice cap melting, as well as its effects on aquatic 

     viability. How do pollutants contribute to these environmental changes, and what are the  potential consequences for ecosystems and human populations?

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