Which sphere contains all living organisms on Earth?

Which sphere contains rocks, soil and Earth's crust?

Which sphere includes oceans, rivers, lakes and groundwater?

The atmosphere is mainly made up of:

Which statement best describes the biosphere?

Carbon can be found in all of the following EXCEPT:

In the atmosphere, carbon is commonly found as:

Which of the following is a carbon store in the geosphere?

In living organisms, carbon is found in:

The movement of carbon through Earth's systems is called:

Photosynthesis occurs mainly in:

Which gas is absorbed during photosynthesis?

What is the main source of energy for photosynthesis?

Which substance is produced during photosynthesis?

The main purpose of respiration is to:

Respiration releases:

Respiration occurs:

Respiration returns carbon to the:

Which is an example of combustion?

Burning fossil fuels releases:

Decomposition is the process of:

Carbon moves from the atmosphere into plants through:

Carbon moves from plants to animals when:

Oceans act as carbon stores because they:

Which process releases carbon stored in fossil fuels?

Deforestation means:

Mining contributes to carbon emissions because:

Cars and aeroplanes contribute to climate change because they: