Matching Pairs Zero and First ConditionalsOnline version Match the sentence halves by Maria Inés Ortelli 1 When more tourism is introduced, 2 If the area of the Arctic ice gets smaller, 3 If we plant a variety of flowers, 4 When an area of jungle is cleared, 5 If tigers are better protected, 6 If an animal is badly injured, there won't be many polar bears left. it isn't able to hunt for food. it has many benefits for local people. the land is often used for farming. we'll see a lot more butterflies. their numbers will probably increase.