Answer:
Plants will have very huge stems and leaves with very long roots. The huge stems and leaves prevent water from being evaporated. The long roots help to find water. They have thorns because they are rare and don't let animals to hurt them or damage them.
Animals have long hide or shells to store water, with its huge bump on the back which enables it to store water. Animals will have thick foot padding that will allow it to walk on sand. Insects will have huge exterior shells covering most of its body and the color of the Insects camouflages with the sand to allow it to hunt and catch prey off guard.