Matching Pairs Real conditionsOnline version Match the parts of the sentence, CAUSE- EFECT, to make one correct by ELENA MA. CASTRO GARCIA 1 If you heat water, 2 When people cut down trees, 3 If people don't eat or drink, 4 If you have a toothache, 5 If I am late, 6 If people don’t protect animals, 7 When factories use fossil fuels, 8 When icebergs melt, 9 If you use air conditioning wisely, 10 When you burn oil, it boils it produces greenhouse gases they become extinct the greenhouse effect gets worse it is deforestation you visit the dentist the sea level rises my father takes me to school. you save up energy eventually they die.