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Exam (elaborations)

GCSE COMBINED SCIENCE: TRILOGY

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GCSE COMBINED SCIENCE: TRILOGY Higher Tier Biology Paper 2H H Downloaded by Edith scott () lOMoARcPSD| 2 *02* IB/M/Jun22/8464/B/2H 0 1 This question is about the cycling of water and carbon in ecosystems. 0 1 . 1 Which reaction produces water? [1 mark] Tick () one box. Aerobic respiration Anaerobic respiration Photosynthesis The water cycle provides water for plants and animals on land before the water goes into lakes and seas. Figure 1 represents the water cycle. Figure 1 Do not write outside the box Downloaded by Edith scott () lOMoARcPSD| 3 *03* Turn over ► IB/M/Jun22/8464/B/2H Do not write outside the 0 1 box . 2 Name the processes 1 to 5 shown on Figure 1. [5 marks] 1 2 3 4 5 0 1 . 3 In 2007 the population of the world was A study found that 4.5% of the population had severe water shortage. Calculate how many people had severe water shortage. Give your answer in standard form. [3 marks] Number of people (in standard form) = Question 1 continues on the next page Downloaded by Edith scott () lOMoARcPSD| 4 *04* IB/M/Jun22/8464/B/2H Do not write outside the box 0 1 . 4 Why do more people have severe water shortage now than in 2007? [2 marks] Tick () two boxes. Climate change has increased the area of deserts. Each person drinks less water. More water is used to grow crops. Sea levels have risen because the ice caps are melting. Some countries have built de-salting factories for seawater. Leaves on a tree contain carbon compounds. In autumn the leaves fall to the ground.

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Institution
GCSE COMBINED SCIENCE
Course
GCSE COMBINED SCIENCE

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lOMoARcPSD|40101158




AQA-GCSE-Combined-Science-Trilogy-Biology-Higher-P
240103 193259
Biology (Redhill School)




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GCSE
COMBINED SCIENCE: TRILOGY
Higher Tier
H
Biology Paper 2H

Time allowed: 1 hour 15 minutes
Materials
For Examiner’s Use
For this paper you must have:
• a ruler Question Mark
• a scientific calculator.
1

Instructions 2
• Use black ink or black ball-point pen. 3
• Pencil should only be used for drawing. 4
• Fill in the boxes at the top of this page.
• Answer all questions in the spaces provided. 5
• If you need extra space for your answer(s), use the lined pages at the end of 6
this book. Write the question number against your answer(s).
• Do all rough work in this book. Cross through any work you do not want to be TOTAL
marked.
• In all calculations, show clearly how you work out your answer.

Information
• The maximum mark for this paper is 70.
• The marks for questions are shown in brackets.
• You are expected to use a calculator where appropriate.
• You are reminded of the need for good English and clear presentation in your answers.




*jun228464b2h01*
IB/M/Jun22/E10
Downloaded by Edith scott ()
8464/B/2H

, lOMoARcPSD|40101158




2
Do not write
outside the
This question is about the cycling of water and carbon in ecosystems. box
0 1

0 1 . 1 Which reaction produces water?
[1 mark]
Tick () one box.


Aerobic respiration


Anaerobic respiration


Photosynthesis




The water cycle provides water for plants and animals on land before the water goes
into lakes and seas.


Figure 1 represents the water cycle.

Figure 1




*02*
IB/M/Jun22/8464/B/2H
Downloaded by Edith scott ()

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Institution
GCSE COMBINED SCIENCE
Course
GCSE COMBINED SCIENCE

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