causes

• melting permafrost releases methane
• incorrect disposal of aerosoles and coolents release cfc's
• volcanoes release ash and sulpher dioxide and co2
• farming releases methane from paddy feilds and cows belching
• deforestation increases co2
• sunspots are magnetic storms that change every 11 years this increases the radiation and heat being emmited
• car exausts release nitrous oxide