Causes and effects of climate change
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Transcript of Causes and effects of climate change
CONTENT
Definition of Climate Change
Causes of Climate Change-
Natural Causes & Human Causes
Effects of Climate Change
DEFINITION OF CLIMATE CHANGE
“ It is a change which is attributed
directly or indirectly to human activity
that alters the composition of the
global atmosphere and which is in
addition to natural climate variability
observed over comparative time
periods”
Earth orbital changes- More tilt = warmer summers & colder
winters
Less tilt = cooler summers & milder winters
HUMAN CAUSES (Anthropogenic or Man-made
causes)
Greenhouse gases
Deforestation
Coal mining
Burning of fossil fuels
Industrial processes
Agriculture
CARBON DIOXIDE ACIDIFIES SEAWATER
CO2 and carbonate (which plankton use to make
shells) combine in the ocean.
The ocean is already more acidic than it was 50
years ago.
Source: Alfred-Wegener-Institute
CO2 CO2
Ocean
Atmosphere
“shelled-critters”