its all about d vast field of geography my field

3. Climate is defined as the average weather
patterns existing throughout several years
over a large portion of Earth's surface.
 30-35 years.
 Climate therefore varies from weather
because weather is concerned only with
short term events.

4.  Natural causes of climate change.
 El Niño
 Earth axis
 Sun spots
 Meteorites and meteor
 Plate tectonics
 Greenhouse gases

5.  Global warming
 Methane
 Chlorofluorocarbon (CFC)

6.  Increase in temperature
 Average global temperatures are expected
to increase by 2°F to 11.5°F by 2100,
depending on the level of future
greenhouse gas emissions, and the
outcomes from various climate models.

8.  Increase Earth's average temperature.
 Influence the patterns and amounts
of precipitation.
 Reduce ice and snow cover.
 Raise sea level.
 Increase the acidity of the oceans.

9.  Low-lying south Florida, at the
front line of climate change in the
US, will be swallowed as sea
levels rise.
 Astonishingly, the population is
growing, house prices are rising
and building goes on.

10.  Warmer seas caused by global warming or
“coral bleaching”.
 Oceanic acidification blamed on carbon dioxide
pollution which reduces the coral growth.
 where corals lose their colorful symbiotic algae,
exposing their white skeletons.

11.  In June 2050, people may see heavy
rainfall in southern Brazil and the west
Amazon.
 In a few days, the rain will exceed the
amount expected for the entire month,
which increases the risk of heavy flooding
and disaster landslides.

12.  Drought is a condition which faces the
shortage of water.
 Mega droughts have occurred throughout
history, roughly every 400 to 600 years.
 The last mega drought to plague the U.S.
occurred in the western U.S. in the mid-
12th century.
 Exceptional drought, the most severe
category, afflicts over 58 percent of
California.

13. Any question ?