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.
Leopard tortoises are not aggressive, so multiple males and females may be kept together. Females may lay one to five clutches of eggs approximately four to six weeks apart. Eggs are laid at various times of the year based on the origin of the tortoise. Clutch size ranges from six to 20 eggs.