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Fill each gap with the correct form of the words in brackets.
Rice crops fail in drought conditions or where the soil is too (1) _____ (SALT). So work underway to 'climate-proof’ rice so it can grow in even the most (2) ______ (FAVOUR) of conditions. Drought affects 23 million hectares of rice annually, and salt is equally (3) ______ (PROBLEM); it reduces yields by 40% and consequently (4) _____ (INTENSE) the pressures on food supplies. Further reductions in yields are likely due to climate (5) ______ (STABLE). Scientists are attempting to produce a super rice by mixing genes from drought-tolerant plants with those from another that exploits nitrogen (6) ______ (EFFECT), thus enabling it to grow without fertiliser. Comparing the new rice's (7) _______ (PERFORM) with that of ordinary rice, the super rice produced 17% more than the ordinary variety in individual trials and 42% more when subjected to a (8) ______ (COMBINE) of stresses. In addition, researchers are working on improving other crops. For example, one team has
developed a potato that is (9) ______ (RESIST) to certain diseases. It is hoped that developments such as this will (10) ______ (LESS) the impact of climate change in developing countries.
Rice crops fail in drought conditions or where the soil is too (1) _____ (SALT). So work underway to 'climate-proof’ rice so it can grow in even the most (2) ______ (FAVOUR) of conditions. Drought affects 23 million hectares of rice annually, and salt is equally (3) ______ (PROBLEM); it reduces yields by 40% and consequently (4) _____ (INTENSE) the pressures on food supplies. Further reductions in yields are likely due to climate (5) ______ (STABLE). Scientists are attempting to produce a super rice by mixing genes from drought-tolerant plants with those from another that exploits nitrogen (6) ______ (EFFECT), thus enabling it to grow without fertiliser. Comparing the new rice's (7) _______ (PERFORM) with that of ordinary rice, the super rice produced 17% more than the ordinary variety in individual trials and 42% more when subjected to a (8) ______ (COMBINE) of stresses. In addition, researchers are working on improving other crops. For example, one team has
developed a potato that is (9) ______ (RESIST) to certain diseases. It is hoped that developments such as this will (10) ______ (LESS) the impact of climate change in developing countries.