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Worldwide, about 10,000 zoos. The conditions vary greatly, with the worst being nothing more than specific prisons that contain very destitute unhappy animals. The best zoos try to recreate the natural environment, although completely this is never possible.

Zoos attract thousands of visitors every year, which allows people to see animals that they have never met before. A few lucky ones can go on a safari, but even then they will see the animals from a distance and, perhaps, just a short time. In addition, a trip to the zoo is much smaller than for the whole family on a safari. Of course, on television have a wildlife program, but they do not allow you to see the animals close. A visit to the zoo educates and entertains people with information about wildlife.

Cons of Zoos

When people visit zoos, they don’t see wild animals, but captive animals whose families still live in the wild. The conditions are artificial and do not allow animals to behave naturally. A cheetah cannot run at full speed, and chimpanzees cannot pick fruit high in the forest, as in their real houses. The truth is that these animals' natural habitats can never be recreated, no matter how hard the zoo tries. And many do not starayutsya.Esli zoo is such a luxurious place for animals, why life expectancy captive elephants, for example, less than their wild relatives? Disappointment, boredom, and loneliness play a role in their suffering and subsequent premature death.

Zoos are a business. They buy, sell and breed animals. When they buy them, they are not always worried about where they came from or the cruelty that was provided to them in their way. When they sell animals, it can be a zoo with terrible conditions or a laboratory where they will experiment on animals.

1. had better 2. i have to 3. must 4. might 5. could. 1.brenda can't be over 30. 2. what should i do? 3. you don't have to come with me 4. anyone could break into his house 5. he mustn't be long. might, might not, must, mustn’t, can’t or can. 1.  we’re not sure but we go to prague for christmas this year.2.  bill cooked the lunch, so you __can, expect anything special! 3. you really _   start spending more time on your work.4.  that’s really stupid idea! you   _mustn't__be serious, surely! 5.  you __can' realize it, but this is very important to me.6. tell mike he take my book if he needs it. rewrite each sentence so that it contains  can’t, might, must, should or needn’t1.  david must have taken  your books by mistake2.  you needn't have parked   outside the police station.3.    liz can't have  met harry before.4. you needn't have  cleaned the floor. 5.  heather can't has  left yet.6.   they can't have eaten all the food7.    jack must have arrived half an hour ago8.    pam and tom can't  come.9.    the cat might have taken  the fish from the table! 10  it must have been  a waste of time worrying, after all!correct any errors in these sentences. some sentences are correct.1) she could 2) you shouldn't have been 3) couldn't manage 4) it could be 5) correct we 't have so much. the cat   __possibly did not open the fridge.  helen __could__ give  us a lift the last person   might have left   the door unlocked we   didn't have to wear  school uniform at my school.                         the   end