Lee y marca la opción correcta para cada oración?

Lee y marca la opción correcta para cada oración. 1. Scientists say that if greenhouse gases______, the temperature of the planet_____raise. A) increase - will b) increases - are c) exists - more d) exist - won't 2. If the Earth's climate____the rainforest____less seasonal rain. A) change - had b) is colder - will be c) doesn't change - will be d) warms - will get 3. If there_____less rain, Earth____through a never seen Dry Season. A) are - does go b) will - goes c) is - will go d) Will be - will go 4. If we _____an unusual dry season, the carbon dioxide absorption process_____. A) has - didn't stop b) stop - will happen c) have - will stop d) stops - happens 5. If absorption process_____, the vegetation photosynthesis____. A) crease - will be longer b) won't crease - will grow c) doesn't stop - won't increase d) stop - will stop 6. If the vegetation photosynteshis_____, leaves____. A) stops - will fall b) make - won't fall c) increases - will warm d) fall - stop 7. If____vegetation photosyntesis, carbon dioxides levels____significantly, imcreasing Global Warming and making this new dry season longer. The balance will be turned. A) there isn't - will raise b) there are - will be low c) there is - won´t raise d) there aren´t - won´t be low 8. If Global warming season_____too long, temperatures____some 15 degrees hotter than now. A) will be - are b) are - will have c) happen - won´t have d) is - will be.