CAUSES AND EFFECTS OF GLOBAL CLIMATE CHANGE

CAUSES AND EFFECTS OF GLOBAL CLIMATE CHANGE




Climate change is a significant and lasting change in the statistical distribution of weather patterns over periods ranging from decades to millions of years.

CAUSES OF GLOBAL CLIMATIC CHANGE

Both natural and human factors change the earth’s climates

Since the industrial era began humans have had an increasing effect on climate particularly by adding billions of tons of heat-trapping greenhouse gases in the atmosphere.




Most of the observed warming since the mid 20th century is due to human-caused greenhouse gas emissions.
 




What causes the sea level to change?

1) As water warms and cools it expands and contracts;
2) The amount of water contained as ice on land surfaces changes over time;
3) The Earth’s surface is dynamic and can move vertically.




The first two reasons are directly caused by global temperature changes.

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