You should spend about 20 minutes on this task.

The diagram shows the movement of carbon on and around the atmosphere. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

Write at least 150 words.

The given diagram elucidates ways in which carbon moves on and around the earth’s atmosphere.

It is clear from the diagram that this movement is cyclic, and involves both natural and human activities.

Turning to the natural ways of carbon emission, plants and trees absorb carbon di-oxide from the atmosphere during photosynthesis at the day. However, at night, they release half of the carbon di-oxide they absorbed during the day through leaves and roots. Animals also exhale carbon di-oxide to the air. Dead organisms and other bio-degradable products are decomposed and carbon is sunk to either soil or water. Carbon also reaches the water from fossil and fossil fuels. From soil, it is taken as nutrients by plants. Carbon contained water evaporates from water bodies, condenses, and returns to the earth’s surface in the form of rainwater.

Turning to the non-natural way, large amounts of carbon di-oxide is emitted to the earth’s atmosphere by factories and vehicles, which increases its concentration in the atmosphere. Carbon wastes which are expelled from factories are sunk in water, and this water is evaporated and falls back as rain.