Complete the Words

Plants that live in deserts have evolved several ways to survive long periods without rain. Cacti, (1)f__ example, (2)st___ water (3)i_ thick (4)st___ that (5)c__ expand (6)af___ heavy (7)ra__ and (8)shr___ again (9)dur___ long (10)drou____. Their leaves have been reduced to sharp spines, which lose far less water than broad, flat leaves and also discourage thirsty animals. In addition, many desert plants open their pores only at night, when the air is cooler and less moisture escapes.