In Depth – Carbon (Met Office)

Carbon Cycle Carbon (chemical element C) is one of the most abundant elements in the universe. All known life forms are carbon-based and it amounts to about 18% of a human body. Carbon dioxide (CO2) and methane (CH4) make up about 0.04% of our atmosphere by volume. However, alongside water vapour, nitrous oxide and ozone…

In Depth – the Water Cycle (Met Office)

The water cycle The Earth’s water The processes The water cycle The water cycle, also known as the hydrological cycle, is the process by which water travels from the Earth’s surface to the atmosphere and then back to the ground again. The sun provides the energy for a continuous exchange of moisture between the oceans,…