Pearson Edexcel Level 1/Level 2 GCSE (9–1) Combined Science 1SC0/2BF 2023 PAPER 4 Question Paper and Mark Question Paper and Mark Scheme Merged

Figure 1 shows a bird called an egret on the back of a buffalo. (Source: © Jaromir Chalabala/Shutterstock) Figure 1 (a) (i) The egret eats parasites that live on the skin of the buffalo. Which term describes this relationship, where the buffalo and the egret both benefit? (1) A eutrophication B mutualism C indigenous D biodiverse DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA (ii) The buffalo is part of the carbon cycle. Use words from the box to complete the sentences. clean decompose energy fertilise glucose water (2) The buffalo gains carbon from the . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . in the plants that it eats. Bacteria will . . . . . . . . . . . . . . . . . . . . . . . . . . .................................... the waste from the buffalo. 2 *P72560A02