Complete the summary below using words from the box. Write your answers, A-H, in boxes 10-13 on your answer sheet.Though often doubted, the self-medicating behaviour of animals has been supported by an increasing amount of evidence. One piece of evidence particularly deals with【R1】______, a soil-consuming behaviour commonly found across animals species, because earth, often clay, can neutralize the【R2】______content of their diet.Such behaviour can also be found among humans in Africa, where people purchase【R3】______at market stalls as a kind of medication to their illnesses. Another example of this is found in chimps eating leaves of often【R4】______taste but with no apparent medicinal value until its unique structure came into light.A mineral B plants C unpleasant D toxicE clay tablets F nutritional G geophagy H harmless 【R1】