Greenhouse gas is a harmful gas which in the earth’s atmosphere traps heat. It lets the sunlight pass through the environment but it prevents the heat which sunlight brings from leaving the atmosphere. It will cause the atmosphere to become hot and harmful. The examples of greenhouse gases are carbon dioxide (CO2), nitrous oxide, water vapour etc. Greenhouse gas cause many harmful effects in environment. Global warming is the main effect of greenhouse gas. Global warming may be a vital issue today. The heat of the earth becomes more and more which causes global warming. But the main cause of global warming is this greenhouse gas. Greenhouse gases like carbon dioxide make weather more and more warm which increases the temperature automatically. Wildlife is destructed cause of it.Many wildlife animals like penguin, seal,wolf are used to live in a cold weather. But for greenhouse gases the temperature increases which makes the environment very difficult for them to live in. This is the reason of many rare animals died most of the time. They can unable to measure weather which coast their life. May aquatic animals death cause by it as heat can make our water bodies hot also . The heat caused by greenhouse gas makes our water bodies also so hot. Sometime many animals and plants live under the water died for this. Forest fair is the cause for greenhouse gas.If the level of greenhouse gas like carbon dioxide increases in the weather it can cause forest fair. It cause many harmful effects towards the environment.To prevent these harmful effects of greenhouse gas we should always try to protect our environment. Prevent deforestation always plants, never burn those fuel which can make greenhouse gas. If we all be more careful and protective towards our nature, greenhouse gas can’t do anything to us.