Greenhouse Effect 

You will have 20 minutes to plan, write and revise an essay about the topic below. Your response will be judged on how well you develop a position, organize your ideas, present supporting details, and control the elements of standard written English. You should write 200-300 words. 

The greenhouse effect is a natural phenomenon that plays a crucial role in regulating Earth’s temperature by trapping heat in the atmosphere. However, human activities, particularly the burning of fossil fuels and deforestation, have intensified this effect, leading to global warming and climate change.

In its natural state, the greenhouse effect is essential for life on Earth. Solar radiation reaches the Earth’s surface, and some of it is absorbed and re-radiated as infrared radiation. Greenhouse gases, such as carbon dioxide, methane, and water vapor, trap this infrared radiation, preventing it from escaping into space. This trapped heat keeps the planet’s temperature within a range suitable for sustaining life.

Human activities significantly contribute to the enhanced greenhouse effect. The burning of fossil fuels releases large amounts of carbon dioxide into the atmosphere, increasing the concentration of greenhouse gases. Deforestation further exacerbates the issue, as trees absorb carbon dioxide during photosynthesis.

The consequences of an intensified greenhouse effect are evident in rising global temperatures, melting ice caps, and more frequent and severe climate events. Mitigating these impacts requires collective efforts to reduce greenhouse gas emissions, transition to renewable energy sources, and implement sustainable land-use practices. Understanding and addressing the greenhouse effect are critical steps in preserving the balance of our planet’s climate and ensuring a sustainable future.