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The Earth's atmosphere changes only slowly, from causes that we do not completely understand. We know, from studies of ancient trees, that atmospheric carbon dioxide levels have been both much higher and somewhat lower than they are now. We also know that there have been periodic warm periods (for example, the Medieval Warm Period from about 900 to 1300) separated by times of extreme glaciation and cold.
There is not much consensus on what stage of the cycle we're in right now, or to what extent human factors have played a role. Certainly the major causes of SUDDEN change in the atmosphere are almost entirely volcanic in origin; that isn't really related to HUMAN history, since volcanoes have been erupting since the dawn of time.
If your premise is to examine anthropogenic global warming, there's actually very little "science" at its core. It's well to remember that Al Gore, the high priest of global warming, had a RELIGIOUS education and is very poorly trained in actual SCIENCES.
Wiki User
∙ 12y ago
Wiki User
∙ 11y agoBy dumping their waste gases into the atmosphere. Mainly millions of tons of CO2 from the power industry and transport. 200 years ago we used to discharge sewage into the rivers, we stopped doing that, we just have to get to the next stage and protect the atmosphere as we protect the rivers.
Wiki User
∙ 12y agoSince the Industrial Revolution we have been digging up and burning fossil fuels (coal, oil and natural gas). This releases carbon dioxide that has been hidden away for millions of years. The carbon cycle cannot remove this extra CO2 from the atmosphere and it is warming up, causing global warming. We have also cut down forests, thus removing trees that would have taken some of the CO2 out of the air.
Wiki User
∙ 14y agoHumans are making earth much warmer so its changing.
Wiki User
∙ 13y agoIt's being eaten away by all the pollutants in the air and the ozone has a lot of holes in it. That is why we are having the greenhouse effect
Wiki User
∙ 11y agoi don't
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How is earth changing and what are the consequences of these changes on the life on earth?
The Earth is always changing climate slowly over time. This forces life on Earth to adapt or die. Thus many species should eventually die out and the stronger, better prepared ones survive. So really the Earth is changing and life is evolving.
How many humans are in earth?
About 5.2 Billion Humans exist on this earth.
What is the force that changes earth's crust?
The force of changing earth's crust is...... that the earth's crust is a lot thinner
Why does the moon's distance from earth is continually changing?
elliptical orbit with earth at one focus.
If a star appears to move relative to other stars over a one-year period this motion is due to the star's?
That's called the star's "parallax", and is due to the changing position of the Earth - the Earth's orbit has a diameter of about 300 million km.That's called the star's "parallax", and is due to the changing position of the Earth - the Earth's orbit has a diameter of about 300 million km.That's called the star's "parallax", and is due to the changing position of the Earth - the Earth's orbit has a diameter of about 300 million km.That's called the star's "parallax", and is due to the changing position of the Earth - the Earth's orbit has a diameter of about 300 million km.
Is the age for Paranormal Activity changing?
Paranormal axidents has hapend since we humans stand on earth
The causes of some of the earliest extinctions such as the Permian extinction are because humans started changing the earth?
A+ False
What some examples of humans adjusting to and changing landforms?
Examples include building levees to control flooding, constructing dams to alter the flow of rivers, and quarrying mountains for resources. Additionally, humans have reshaped coastlines through the construction of harbors and sea walls, and have reclaimed land from the sea for infrastructure and agriculture.
What is the duration of Are We Changing Planet Earth?
The duration of Are We Changing Planet Earth? is 3600.0 seconds.
How are humans changing the land so they can use it?
Humans are changing the land by doing deforestation, building a lots of dams,increasing population.
Are humans changing or ruining the Simpson desert?
no
Why does a ball arch when thrown and not in a straight line?
The gravity from Earth pulls it down, thus changing its direction.The gravity from Earth pulls it down, thus changing its direction.The gravity from Earth pulls it down, thus changing its direction.The gravity from Earth pulls it down, thus changing its direction.
Is Earth getting smaller?
No. Earth is not changing in size.
Which part of the earth do humans live on?
Humans live on the lithosphere, or the crust, of the earth.
When was Touching Heaven Changing Earth created?
Touching Heaven Changing Earth was created on 1998-07-05.
Why is the shape of the earth always changing?
The shape of the Earth is changing at all times. This is due to gravity, tectonic plates moving, and every form of erosion changing things.
Why did early humans migrate?
Early humans migrated in search of food, shelter, and better living conditions. They followed animal herds, changes in climate, and the availability of resources to support themselves and their communities. Migration also helped early humans avoid competition with other groups and adapt to new environments.
