*(a)(i) Stages A, B, C, D:* - A: Green plants - B: Animals - C: Dead organisms - D: Decay/Decomposers *(a)(ii) Processes P, Q, S, T:* - P: Photosynthesis - Q: Feeding - S: Decomposition - T: Combustion *(a)(iii) Three human activities that could disrupt the cycle:* - Deforestation - Burning fossil fuels - Industrial pollution --- *(b)(i) Names of farming systems K and L:* - K: Crop rotation - L: Mixed cropping *(b)(ii) Reasons:* - K rotates crops over years to manage soil nutrients. - L grows multiple crops simultaneously to maximize land use. *(b)(iii) Two importance of K to farmers:* - Prevents soil nutrient depletion - Controls pests and diseases *(b)(iv) Three reasons K is not encouraged:* - Requires planning and knowledge - Needs more land/time - Not suitable for all crops *(b)(v) One crop to improve soil fertility in L:* - Legumes (e.g. cowpea)