Answer:
A- True
Step-by-step explanation:
The potential effects on water supplies are indeed one of the most serious consequences of global climate change. Here's why:
1) Changing Precipitation Patterns: Climate change can alter the distribution and intensity of rainfall, leading to changes in precipitation patterns. Some regions may experience increased rainfall and the risk of flooding, while others may face decreased rainfall and drought conditions. These changes can have significant impacts on water supplies, affecting both surface water and groundwater resources.
2) Melting Glaciers and Snowpack: Rising temperatures can cause glaciers and snowpacks to melt at an accelerated rate. Glaciers act as natural reservoirs of freshwater, and when they melt, they contribute to the overall water supply. As glaciers disappear, they can lead to reduced water availability for drinking, agriculture, and other uses, particularly in areas that rely on glacial meltwater as a primary source of freshwater.
3) Sea-Level Rise and Saltwater Intrusion: Global warming can cause the polar ice caps to melt, leading to rising sea levels. This increase in sea levels can result in saltwater intrusion, where saltwater infiltrates freshwater sources such as rivers and groundwater aquifers. This intrusion contaminates freshwater supplies, making them unfit for consumption and agricultural use.
4) Changes in Water Quality: Climate change can also impact water quality. Higher temperatures can increase the growth of harmful algal blooms and bacteria, which can contaminate water supplies and pose health risks to humans and aquatic life. Additionally, changes in precipitation patterns can result in increased runoff of pollutants into water bodies, further compromising water quality.
5) Increased Water Stress and Conflict: As water resources become scarcer due to climate change, the competition for water can intensify, leading to conflicts between different sectors and even nations. This can exacerbate existing tensions and create new challenges in managing and allocating water resources.
Overall, the potential effects on water supplies are indeed a significant consequence of global climate change. The changes in precipitation patterns, melting glaciers and snowpack, sea-level rise and saltwater intrusion, changes in water quality, and increased water stress can all have far-reaching impacts on water availability and quality, posing serious challenges for communities and ecosystems.