Прочитайте текст. От приведенных в скобках (В19-В22) слов образуйте однокоренные слова таким образом, чтобы они грамматически и лексически соответствовали содержанию текста. Заполните пропуски полученными словами. Помните, что заданную форму слова необходимо изменить. Chameleons make unusual pets so buying one is a decision that should be made very (B19) (REQUIRE). Chameleons make unusual pets so buying one is a decision that should be made very (B19) (CARE). They have a lot of complex environmental (B20) Almost all species of this reptile can change colour. This ability to transform their appearance is actually a form of personal communication. Most chameleons show this form of behaviour when they are anxiously escaping from deadly predators, such as snakes and birds, and some do this when they are angry. This adaptation makes them fascinating creatures to observe. (B21) (FORTUNATE), some of the 160 species of chameleons are actually (B22) because of habitat loss and destruction. Chameleons will continue to decline and are most likely to go extinct if immediate measures are not taken to preserve their natural habitats. (DANGER)