UPVC windows are cleaned with water and vinegar mixed in a sprayer. Jupiterimages/BananaStock/Getty Images. Unplasticized polyvinyl choloride, or UPVC, is a rigid and chemically resistant plastic used often in window and door frames.
Clutch size: 35-50 eggs. In April or May, the female crocodile will build a nest of loose dirt in a mound by the water's edge and lay her eggs. She buries the eggs and fiercely guards her nest. When the eggs hatch in July or early August, the female helps carry her young to the water.
Life cycle. The young crocodile emerges from the egg with a length of 20â30 cm (8â12 inches). At first it remains with its siblings concealed at the edge of its water habitat in order to avoid various predators. Principal among these are fishes and birds, but larger crocodiles also prey upon the young.