Greenhouses are transparent glass or plastic made houses used in cold climate countries to preserve plants in a relatively warm state. The glass walls of green houses allows the sunlight to come in rising the temperature, but when it radiates as heat it is not allowed to go out; as a result the inside of a green house stays warm and humid. Greenhouses are designed to control the balance of temperature, moisture, and light to suit the growth requirements for plants as diverse as orchids, cacti, tomatoes, and citrus trees.
On the other hand, Greenhouse effect is the capacity of certain gases (like carbon-dioxide, methane, carbon-monoxide, sulphur-dioxide, nitrous-oxide etc.) in the atmosphere to trap heat emitted from Earth’s surface, thereby insulating and warming the planet. Similar to the glass walls of greenhouse- these gasses allow the sunlight to enter the atmosphere warming it, but do not let the heat escape. Without the thermal blanketing of the natural greenhouse effect, Earth’s climate would be about 33°C (about 59°F) cooler—too cold for most living organisms to survive. Unfortunately human activities such as burning fossil fuels, destruction of forests, releasing harmful chemical in the atmosphere are disrupting this natural process, with potentially dangerous consequences such as Global Warming and Climate Change.
Since the advent of the Industrial Revolution in the 1700s, humans have devised many inventions that burn fossil fuels such as coal, oil, and natural gas. Burning these fossil fuels, as well as other activities such as clearing land for agriculture or urban settlements, releases some of the same gases that trap heat in the atmosphere, including carbon dioxide, methane, and nitrous oxide. These atmospheric gases have risen to levels higher than at any time in at least the last 650,000 years. As these gases build up in the atmosphere, they trap more heat near Earth’s surface, causing Earth’s climate to become warmer than it would naturally.
The rise temperature of earth is melting down polar ice caps. As a result sea level is rising and soon coastal areas of many countries and some island nations will completely go under water killing a lot of people and displacing many more. Due to this Global Warming the intensity and frequency of natural disasters are increasing, that is the storms are getting stronger and they are occurring more often. Besides that, polluted air causes diseases such as lungs cancer, bronchitis, asthma and other respiratory problems. Diseases such as Tuberculosis, Pneumonia are also caused by contaminated air. The rise in temperature is also changing the climate which is destroying natural habitats of animals and plants. The food chains are disrupted and one by one endangered animals and plants are going extinct. If this process of extinction continues then soon it will be our turn to go extinct.
So this excess Greenhouse Effect is a threat to human survival. We need to stop it as soon as possible. To decrease the emission of Greenhouse Gases we have to follow the 3 (R) s: Reduce, Reuse and Recycle. It is our duty to reduce the use of fossil fuels and non renewable sources of energy such as oil, coal and gas. We can do that by using solar energy, wind energy, hydro-electric power, geothermal energy, bio-fuel and other renewable sources of energy. We need to products such as plastic bags, electronic products, clothes, containers and other goods by repairing them or finding alternate uses for them. We can recycle cow dung and garbage to produce bio-gas which is an eco friendly source of energy. We have to plant trees as much as possible and take care of them.
If the Greenhouse Gases continues to increase our home planet Earth would become inhabitable soon. We hope that we will be able to check Greenhouse Effect to ensure human survival.