Nutrient cycles — Paper 1 · IGCSE Biology (9-1) 0970

35 The diagram shows part of the carbon cycle. Which arrow represents photosynthesis? carbon dioxide in air D A B C animals burning plants decomposers

1 marks

Answer: D

This question in 0970/12 Oct/Nov 2018

37 Which process is part of the carbon cycle? A combustion B evaporation C precipitation D transpiration

1 marks

Answer: A

This question in 0970/12 Oct/Nov 2019

37 The diagram shows part of the carbon cycle. carbon dioxide X dead matter plants Y animals What do arrows X and Y represent? A decay and respiration B feeding and photosynthesis C photosynthesis and respiration D respiration and feeding

1 marks

Answer: D

This question in 0970/12 Oct/Nov 2020

37 The diagram shows stages in the water cycle. X Which process is represented by the letter X? A condensation B evaporation C precipitation D transpiration

1 marks

Answer: C

This question in 0970/11 May/June 2021

37 The diagram shows the water cycle. S Q R P land land land river sea The table shows the processes involved in the water cycle. Which row is correct? condensation evaporation precipitation transpiration A P Q R S B R S Q P C S R P Q D Q P S R

1 marks

Answer: D

This question in 0970/12 Oct/Nov 2021

38 Which process releases carbon dioxide into the atmosphere? A decomposition B fossilisation C photosynthesis D transpiration

1 marks

Answer: A

This question in 0970/12 Oct/Nov 2021

37 The diagram shows the water cycle. Four different processes are numbered. 4 3 1 2 Which row identifies the processes correctly? condensation evaporation precipitation transpiration A 1 4 3 2 B 2 1 4 3 C 3 2 1 4 D 4 3 2 1

1 marks

Answer: C

This question in 0970/11 May/June 2022

37 The diagram shows part of the carbon cycle. carbon dioxide in the atmosphere X X X fossil consumers producers fuels decomposers Which process is shown by the arrows labelled X? A combustion B fossilisation C photosynthesis D respiration

1 marks

Answer: D

This question in 0970/12 May/June 2022

36 The diagram shows part of the carbon cycle. 1 carbon dioxide 2 concentration in the atmosphere 3 industry transport 4 animals plants and power fossil fuels (coal and oil) decomposers Which processes reduce or increase carbon dioxide concentration in the atmosphere? reduces increases A 1 4 B 2 3 C 3 2 D 4 1

1 marks

Answer: B

This question in 0970/12 Oct/Nov 2022

37 Some of the processes involved in the carbon cycle are listed. 1 combustion 2 decomposition 3 photosynthesis 4 respiration During the carbon cycle, which processes release carbon dioxide into the atmosphere? A 1, 2 and 3 B 1, 2 and 4 C 1 and 4 only D 2 and 3 only

1 marks

Answer: B

This question in 0970/11 May/June 2024

37 These are processes found in the carbon cycle. • combustion • decomposition • feeding • photosynthesis • respiration How many of these processes release carbon dioxide into the atmosphere? A 1 B 2 C 3 D 4

1 marks

Answer: C

This question in 0970/12 May/June 2024

35 The diagram shows part of the carbon cycle. carbon dioxide 2 in atmosphere 1 waste products 4 and dead plants organisms animals 3 Which two numbered arrows represent respiration? A 1 and 2 B 1 and 3 C 2 and 4 D 3 and 4

1 marks

Answer: C

This question in 0970/12 May/June 2025

34 Which arrow represents respiration in plants? carbon dioxide dissolved in seas and lakes carbon dioxide gas in the air A B C D carbon compounds carbon fossil in decaying compounds fuels organisms in plants carbon compounds in animals

1 marks

Answer: D

This question in 0970/12 Oct/Nov 2025