2023 AQA GCSE COMBINED SCIENCE: TRILOGY 8464/B/2F Biology Paper 2F Question Paper & Mark scheme (Merged) June 2023 [VERIFIED]

2023 AQA GCSE COMBINED SCIENCE: TRILOGY 8464/B/2F Biology Paper 2F Question Paper & Mark scheme (Merged) June 2023 [VERIFIED] Materials For this paper you must have: • a ruler • a scientific calculator. Instructions • Use black ink or black ball-point pen. • Pencil should only be used for drawing. • Fill in the boxes at the top of this page. • Answer all questions in the spaces provided. • If you need extra space for your answer(s), use the lined pages at the end of 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 marked. • In all calculations, show clearly how you work out your answer. For Examiner’s Use Question Mark 1 2 3 4 5 6 7 TOTAL 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. *JUN238464B2F01* IB/M/Jun23/E6 8464/B/2F 2 0 1Figure 1 shows a place where peat is being removed from a peat bog. Figure 1 0 1 . 1Why is peat removed from peat bogs? [1 mark] Tick ( ) one box. To increase biodiversity To produce garden compost To protect rare habitats Do not write outside the box *02* IB/M/Jun23/8464/B/2F 3 0 1 . 2 Peat can decay. Name one type of organism that causes decay. [1 mark] 0 1 . 3 Complete the sentences. Choose answers from the box. [2 marks] carbon dioxide nitrogen oxygen sulfur dioxide The organisms that cause decay respire. The gas used for respiration is . The gas produced by respiration is . Question 1 continues on the next page Turn over ► *03* Do not write outside the box IB/M/Jun23/8464/B/2F 4 0 1 . 4 Peat bogs cover a total area of 3 700 000 km2. In 2020, 46% of peat bogs were frozen. How can the area of peat bogs that were frozen be calculated? [1 mark] Tick ( ) one box. 46 3 700 000 × 100 46 3 700 000 × 100 3 700 000 × 100 46 0 1 . 5The percentage of peat bogs that are frozen decreases each year. Suggest why the percentage of peat