Greenhouse Gases
Solar radiation reaches the Earth's atmosphere - some of this is reflected back into space. The rest of the sun's energy is absorbed by the land and the oceans, heating the Earth. Heat radiates from Earth towards space. Some of this heat is trapped by greenhouse gases in the atmosphere, keeping the Earth warm enough to sustain life. Human activities such as burning fossil fuels, agriculture and land clearing are increasing the amount of greenhouse gases released into the atmosphere.This is trapping extra heat, and causing the Earth's temperature to rise.
Marine Pollution
Ocean pollution is caused by the introduction of toxic materials and harmful pollutants such as agricultural and industrial waste, chemicals, oil spills, and plastic litter into the ocean waters.Spectacular catastrophes which are the oil slicks, pollution by used water, waste domestic, agricultural, industrial and radioactive, eutrophication by nutritive salts and organic matter, the seas became dumps.
E-Waste
E-waste contains a laundry list of chemicals that are harmful to people and the environment, like: mercury, lead, beryllium, brominated flame retardants, and cadmium, i.e. stuff that sounds as bad as it is. When electronics are mishandled during disposal, these chemicals end up in our soil, water, and air.