# PTE DI #28: The Greenhouse Effect and...

Describe Image #28 - Level 3 - Feeds Speaking

> Look at the given Image below in 25 seconds, please speak into the microphone and describe the details what the Image is showing. You will have 40 seconds to give your response.

## Answer

The diagram explains how greenhouse gases contribute to global warming. Solar energy enters the Earth's atmosphere, but part of it is trapped by greenhouse gases like carbon dioxide from vehicles and factories. Deforestation reduces the number of trees that absorb carbon dioxide, worsening the effect. As a result, heat remains in the atmosphere, raising global temperatures and altering the Earth's climate balance.

## Explanation

A high-scoring response systematically describes the flow of energy, starting from solar radiation, moving to the reflection and absorption processes, and concluding with the impact of human activities like fossil fuel combustion and deforestation on heat retention.

## Hints

- Start by identifying the main subject of the diagram, which is the greenhouse effect.
- Describe the movement of energy arrows, distinguishing between heat radiating into space and heat being trapped by gases.
- Mention the human factors shown at the bottom, such as vehicle emissions and tree felling, as contributors to the process.

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