Earth is surrounded by atmosphere which is made of several layers of gas. Green house gases are important. These include water vapour, ozone, methane, co2, chlorofluoro carbons, and nitrous oxide. Some of the green house gases are created by the activities of man. Burning of fossil fuels like coal, oil, gas releases carbon dioxide. Chlorofluoro carbons which are used in sprays, fridges are very harmful when released in large amounts into the atmosphere.  When the gases keep on increasing the balance of the gases gets changed and effects the whole environment.  Higher temperature will make the water in the seas expand. In the regions like Antarctica, Greenland the ice gets melted and the water flows into sea, oceans which will gradually result in rise of the sea levels. Low lying coastal areas get affected by the increased sea levels. Changes in weather affects the growth of different types of crops in different regions. Due to changes in the weather the amount of rainfall will get affected. Due to changes in the temperature plants, animals, human beings will also get affected.

Some of the personal and basic ways to reduce green house effect are try to use fewer natural resources. Car pooling or using public transport can reduce usage of fuels. Switch off the electricity when not in use. Using of recyclable tins, plastic covers, and cans is one of the ways to reduce this effect.

Junk foods are high in fat, sugar, sodium which leads to various health diseases like diabetes, heart disease, joint related problems, and obesity. A healthy body needs proteins, vitamins. But junk foods contain high amount of sugar which puts you under stress. Junk food contains lot of fat. When more fat accumulates in the body and you will gain more weight. This causes over weight which leads to obesity, diabetes. High levels of sodium in the food cause hypertension. Excessive sodium intake will have a negative effect on renal function which will finally lead to kidney disease. Packed junk food which contains carcinogenic substances shows a negative effect on cardio vascular system. Some of the junk foods also show quick effect of aging.  It cause lack of concentration, poor concentration, poor digestive system, high cholesterol and heart diseases.