Which of the following is NOT a direct contributing factor to rising sea levels?

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BlackTom AI · Accepted Answer

To tackle this question, I will evaluate how each option relates to sea level rise.
Option a: Melting of glaciers worldwide. When glaciers melt, the water is added to the oceans, increasing ocean volume and thus raising sea level. This is a direct contributing factor because it directly transfers freshwater from land to the sea.
Option b: Increased prevalence of droughts. Droughts primarily affect land areas by reducing precipitation and moisture, but they do not by themselves add water to the oceans or cause significant volume expansion in seawater. Therefore, this is not a direct contributor to rising sea levels, though droughts can influence regional hydrology and evaporation patterns.
Option c: Melting of the Antarctic ice sheet. The Antarctic ice sheet contains vast amounts of ice stored on land; its melt adds substantial freshwater to the oceans, directly elevating sea level. This is a major direct contributor.
Option d: Thermal expansion of seawater. As ocean water warms, it expands, increasing volume even without additional water input. This is a classic direct mechanism of sea level rise.
Option e: Melting of the Greenland ice sheet. Similar to Antarctica, the Greenland ice sheet is land-based ice; its melting contributes directly to higher sea levels by delivering more water to the oceans.
In summary, each of options a, c, d, and e describes a process that directly increases ocean volume or water input to the seas, whereas option b describes a climatological condition that does not by itself raise sea level, making it the correct choice for NOT being a direct contributing factor.

CCST9086_1A_2025 Quiz6

Which of the following is NOT a direct contributing factor to rising sea levels?

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