If your sister goes to paris, a good time

If your sister goes to Paris is going to have a good time

Если в одной части if+present simple то в другой будет zero/first conditional
В данном случае zero: is going to have

13. When I (heard) his knock I (went) to the door and (opened) it, but I (did not recognize) him at first because I (was not wearing) my glasses. 14. When I came in they were (sitting) round the fire, Mr. Smith (was doing) a crossword puzzle, the others (were reading). Mrs. Smith (smiled) at me and (said), "Come and sit down." 15. I (saw) you yesterday from the bus. Why were you (using) a stick? — I (was using) a stick because I (had hurt) my leg that morning. 16. The children (came) to the party at 4 o'clock yesterday; but before that Mr. and Mrs. Green (had decorated) the room, Mrs. Green (had baked) cakes, and Mr. Green (had bought) a small present for every little guest. 17. As they (were walking) along the road they (heard) a car coming from behind them. Tom (turned) round and (held) up his hand. The car (stopped). 18. When I (arrived) at the station Mary (was waiting) for me. She (was wearing) a blue dress and {looked) very pretty. 19. When I (saw) him he (was painting) a portrait of his wife. 20. While he (was watering) the flowers it (began) to rain. 21. When I last (saw) her she (was hurrying) along the road to the station. I (asked) her where she was (going) and she (said), "London", but I don't think she (told) the truth because there was (not ) any train for London at that time, 22. The men (said) that they (were working) on the road outside my house and that they (wanted) some water to make tea. 23. Richard (got) a new exercise-book yesterday because he (had filled) his old one. 24. Ann said that she (was) on holiday. I (said) that I (hoped) that she (would enjoy) herself. 25. When I (looked) through your books I (noticed) that you had a copy of "Night work". 26. She said that she (did not like) her present fiat and (was trying) to find another. 27. When Margaret (finished) her homework she (turned) on the radio.

Люди постоянно разрушают окружающую среду: ведется вырубка лесов, процветает браконьерство, и даже просто банально- животные гибнут под колесами транспорта.

Природа также не щадит никого: меняется климат, происходит извержение вулканов, цунами накрывают берега обитания млекопитающих, места кормежки зарастают не той пищей, какая требуется травоядным видам.

Да и сами животные болеют, убивают свое потомство, например,как львы в прайде, или им просто не с кем скрещиваться- вокруг одни кровные родственники!

Поэтому вымирающие и находящиеся на грани вымирания животные заносятся в Красную книгу, а также существуют охранные организации , занимающиеся вопросами охраны , разведения и поддержки таких особей.