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During the last ice age how much of the earth's surface was covered by glaciers?
30%
Why do glaciers matter in terms of their impact on the environment and global climate change?
Glaciers are important because they store a significant amount of Earth's freshwater, which affects global sea levels and water availability. As glaciers melt due to climate change, they contribute to rising sea levels and can disrupt ecosystems and water supplies. Additionally, the reflective surface of glaciers helps regulate Earth's temperature by reflecting sunlight, so their loss can contribute to further warming.
What best describes the impact of glaciers upon the surface of the earth?
Glaciers have a significant impact on shaping the Earth's surface by eroding rock and soil as they move, creating features like U-shaped valleys and cirques. They also transport and deposit sediments, contributing to the formation of landforms such as moraines and drumlins. Additionally, melting glaciers can lead to changes in sea levels and impact global climate patterns.
How would sea levels be affected if all of Earth's glaciers got bigger and new glaciers formed?
Sea levels would fall, because a lot of the earth's water would then be tied up (frozen) in these glaciers.
How does earths surface change during an ice age?
it changes by all the ice melting ,there fore we flood.
What is the most likely that there is more oxygen in water near the surface?
Near the surface of water, oxygen levels are higher due to aeration from the atmosphere and photosynthesis by aquatic plants. This results in greater oxygen saturation near the surface compared to deeper levels where oxygen may be consumed by decaying organic matter.
What is the rising of cold water from deeper layers to replace warmer surface water called?
This process is called upwelling. Upwelling occurs when winds push surface water away, allowing cold, nutrient-rich water from deeper levels to rise up to the surface. This phenomenon is important for supporting marine ecosystems by bringing nutrients to the surface and supporting the growth of phytoplankton.
How would sea levels be affected if all of Earths glaciers got bigger and new glaciers formed?
If all of Earth's glaciers were to get larger and new glaciers formed, it would lead to a decrease in global sea levels. This is because glaciers are formed when snow accumulates over a long period of time, compressing into ice. As more ice is stored in glaciers, less water is in the oceans, resulting in a lower sea level.
What percentage of glaciers cover Earth today?
Today, glaciers cover approximately 10% of the Earth's land surface. This includes ice sheets in Antarctica and Greenland, as well as smaller glaciers found in various mountain ranges around the world. Overall, the total volume of glacial ice is diminishing due to climate change, impacting sea levels and ecosystems.
Why do sea levels fall as glaciers grow larger?
The amount of water on the planet stays the same. If huge amounts of this water is frozen on land, in glaciers, then it means that there is less water in the oceans, and sea levels are lower.
An enviromental phenomenon that may result in rising of sea levels?
Melting of glaciers.
How will glaciers and icebergs be affected by global warming?
Global warming is causing glaciers to retreat and icebergs to break off more frequently and in larger sizes. As temperatures rise, glaciers melt at a faster rate, leading to rising sea levels and disrupting ecosystems. The increased melting of icebergs can also impact ocean currents and marine habitats.
