Causes of Climate Change
Natural Causes
Human Causes
Solar Output 
Greenhouse Effect 
Volcanic Eruptions 
-Leads to large volumes of carbon dioxide, water vapor, sulfur dioxide, dust and ash released into atmosphere.
-Sulfur dioxide reacts with water and forms sulfur based particles.
-Sulfur based particles, dust and ash reflects solar energy which enters the atmosphere back to space.
-Results in short term cooling influence on regional and global temperatures
-The more number of sunspots on the sun's surface, the higher the solar radiation.
-Earth's climate is sensitive to the amount of solar radiation receives.
-Areas surrounding sunspots radiate more energy to compensate lower temperatures of sunspot areas
-Example: Eruption of Mount Pinatubo in Philippines
-Sunspots area are cooler than other areas on the surface of the sun.
-High solar radiation can cause global temperature to rise.
-Greenhouse gases which absorbs longwave radiation from earth's surface in the atmosphere
Keeps Earth's atmosphere warm
Enhance greenhouse effect
Anthropogenic Factor
Industries 
Agriculture 
Deforestation 
Urbanisation 
-Loss of trees less absorption of carbon dioxide in atmosphere for photosynthesis so it caused an increase in carbon dioxide levels
-Clearance of trees leave soil bare and exposed to the sun.
-Soil oxidation rate increases due to heat so the carbon in the soil quickly reacts with oxygen in the air to form carbon dioxide
Less absorption of carbon dioxide in atmosphere for photosynthesis so it leads to an increase in carbon dioxide levels
-Manufacturing process involves the use of fossil fuels as energy
-The result of this is emitting greenhouse gases as byproducts after manufacturing process.
-Secondary industries producing goods and services.
Countries such as China emits tons of greenhouse gases every year.
-Tractors used for crops releases carbon dioxide
Inorganic fertilisers such as nitrous oxide may escape from soil after being ploughed or wash through rain.
-Cattle farming leads to increase in methane gas levels as it is released as a waste gas by cattle
-Increases decomposition rate due to higher level of moisture which increase the rate of producing methane gas
-Increasing number of people living in cities or towns
-Huge amount of fossil fuels is needed to burnt to provide energy for the people in the cities
-Cities contain many vehicles which release a lot of greenhouse gases