Biology 0610 · IGCSE · Nutrient cycles

Nutrient cycles — practice question

(a(i))[4]

Complete Table 8.1 so that it shows how carbon moves through the carbon cycle, together with the names of the processes.

(a(ii))[1]

State the name of the process by which microorganisms transfer carbon in dead organisms to the atmosphere.

(b)[4]

Complete the sentences about the atmosphere. Combustion of fossil fuels [BLANK] the concentration of carbon dioxide in the atmosphere. This causes an [BLANK] greenhouse effect and leads to [BLANK]. Another gas that affects the atmosphere in a similar way to carbon dioxide is [BLANK].

Worked solution & mark scheme

This 9-mark question has a full step-by-step worked solution and mark scheme. One marking point: transfer from animals or plants to the atmosphere → respiration

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI