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Much of earth'swater was frozen into glaciers
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What is the volume of nitrogen in the earths atmosphere at sea level?
78
What is a reason that the ozone near the earths surface is dangerous?
Ozone at ground level is a pollutant. It is a greenhouse gas.
Why can small increases in the level of a hormone cause disease?
A small increase or decrease in hormone level can cause disease.
What does low level of aldosterone mean?
This low level can be a cause of hypotension.
Why is ocean water denser than freshwater or pure water?
The water of the oceans is denser because of the high level of salt it contains.
The rises and falls in the level of earths oceans caused mainly gravity or pull of the moon is?
Tides
What dropped during the last ice age allowing people to cross to the Americas?
The water level of the oceans, thus exposing a land bridge.
During an ice age earths sea level?
During a glaciation earth's sea level drops, because of the water evaporating from the oceans falling as snow on the land and not melting for thousands of years.
What might cause the sea level to change and how would that affect us?
Melting Polar Ice Caps add water to the Oceans, raising the Sea Level and flooding coastal towns and cities.
Are you closer to the earths core or moons surface when standing at sea level?
Earth's core
When standing at sea level which are you nearer to the earths core or the Moon's surface?
Earths core
What is the average level of the oceans's surface as measured along the shoreline?
sea level
What is one thing that can cause a tsunami?
Most tsunamis are caused by earthquakes below the sea level. These undersea earthquakes are a result of shifting in the earths tectonic plates.
Why was the level of the aral sea dropped?
Desalination
Why has the ozone level dropped?
Yes, ozone levels have dropped. It is because of use of CFC's by humans.
What is the lowest level of earths atmoshpere?
The Troposphere is the lowest level of Earth's Atmosphere.
What is the oceans elevation level?
the elevation of the ocean is currently unknown
