Human Connections: Life on Earth

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Human Connections Life on Earth What have we
done?
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THE BEGINNING OF THE EARTH
IN THE BEGINNING, THE EARTH WAS VERY HOT
(240-340 DEGREES CELCIUS). IT HAD EVENTS LIKE
VOLCANIC ERUPTIONS AND ASTEROID IMPACTS. THE
ATMOSPHERE WAS COMPOSED OF 95 CARBON DIOXIDE,
NO OXYGEN, JUST 1.9 OF NITROGEN, NO METHANE. IT
HAD A LOT OF VOLCANOS WHICH FREQUENTLY ERUPTED
AND IT RAINED BECAUSE OF THE SMOKE OF THE
VOLCANOS. THIS RAIN MADE THE OCEANS AND AFTER
THE EARTH WAS COLDER.
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SO THE OCEANS WERE CREATED AND LIFE COULD
BEGIN ...
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THE VAPOR OF THE VOLCANOS MADE CLOUDS, AND AFTER
THAT IT STARTED RAINING. THIS RAIN MADE THE
OCEANS COOL THE PLANET.
AFTER THIS,THE PLANET HAD 21 OF OXYGEN, 0.03
OF CARBON DIOXIDE AND THE TEMPERATURE HAD
CHANGED TO 13 DEGREES CELCIUS (THE SAME
TEMPERATURE THAT WE HAVE TODAY).
THE TEMPERATURE THE QUANTITY OF OXYGEN OTHER
GASES WATER LIFE
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LIFE BEGAN
OVER THE PAST 400 MILLION YEARS OXYGEN HAS
REMAINED CONSTANT BETWEEN 15 AND 25. IF IT WAS
BELOW 15, FIRE COULD NOT BE SUSTAINED, AND IF
IT WAS ABOVE 25, FIRE WOULD BURN SO WILDLY (NO
FOREST COULD GET TO GROW). BUT WITH THIS QUANTITY
(15-25) FORESTS GREW AND LIFE BEGAN , DIFFERENT
KINDS OF LIFE .
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THE SUN HAS GROWN IN POWER ABOUT 30. THE
PERCENTAGE OF OXYGEN HAS BEEN THE SAME . THE
TEMPERATURE HAS BEEN THE SAME IN THE PAST 4 600
MILLION YEARS.
WITH TIME HUMANS EVOLVED AND COMMANDED THE EARTH
. WITH TIME, TECHNOLOGY GREW AND HUMANS STARTED
CHANGING THE PLANET WITH POLLUTION , MACHINES ,
CITIES , ETC
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HUMANS COMMAND THE EARTH
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CARBON DIOXIDE
CARBON DIOXIDE IS A GREENHOUSE GAS ( THIS AND
METHANE ARE THE MOST IMPORTANT GREENHOUSE GASES
IN THE ATMOSPHERE ). THERE IS ONE CARBON CYCLE
. VIOLENT NATURAL EVENTS SUCH AS FOREST FIRES AND
VOLCANIC ERUPTIONS RELEASE LARGE AMOUNTS OF
CARBON DIOXIDE.
GAS EARTH WITHOUT LIFE EARTH AS IT IS
CARBON DIOXIDE 95 0.03
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IN THE FALL SEASON THE LEAVES FALL OFF THE TREES,
SO THE TREES DO NOT ABSORB THE CARBON DIOXIDE.
WHEN THE TREES DIE, THE CARBON MIXES WITH OXYGEN
IN THE ATMOSPHERE AND BECOMES CARBON DIOXIDE. THE
CARBON IN THE ROOTS BECOMES DISSOLVED IN GROUND
WATER, AND IS WASHED THROUGH STREAMS INTO THE
OCEAN. THERE IT IS ABSORBED BY A TINY ORGANISM (
TO FORM THE SHELL OF THE ORGANISM). WHEN THESE
ANIMALS DIE, THEY SINK TO THE BOTTOM.
FALL SEASON
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CARBON CYCLE
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CARBON DIOXIDE
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HUMANS ARE PRODUCING CARBON DIOXIDE MUCH FASTER
THAN IT CAN BE ABSORBED BY NATURAL SINKS . THE
CONCENTRATION OF CARBON DIOXIDE IN THE ATMOSPHERE
HAS GROWN 30 SINCE THE INDUSTRIAL REVOLUTION
. HUMANS REMOVE THE TREES , POLLUTE THE PLANET,
AND CAUSE A GLOBAL WARMING PROBLEM
CITY
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OTHER GREENHOUSE GASES
METHANE
OZONE
IT IS PRODUCED IN ANIMALS WHEN THEY DIGEST FOOD
WITHOUT USING OXYGEN .
IT IS A FORM OF OXYGEN WHICH ABSORBS HARMFUL
ULTRAVIOLET RAYS FROM INCOMING SUNSHINE. IT ALSO
ABSORBS HEAT FROM THE EARTH .
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ULTRA VIOLET RAYS
OZONE LAYER
HUMANS POLLUTE THE PLANET. THIS POLLUTION AFFECTS
THE AIR AND THE OZONE LAYER. SO SOME ULTRAVIOLET
RAYS CAN PENETRATE THE EARTH WHICH CAN GENERATE
PROBLEMS TO THE SPECIES , SUCH AS SKIN CANCER
POLLUTION
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SAVING THE WORLD
HUMANS ARE SUPPOSED TO STOP POLLUTING THE EARTH.
PEOPLE TAKE CARE OF YOUR PLANET ...
HUMANS ARE SUPPOSED TO BE CAREFUL WITH NATURE.
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THE END