dry means low in amount of water & as dryness increases in an environment , the available water in that environment will decrease ->  a dry environment is low in availability of water  storing water is a kind of adaptation & storing something is a kind of method for increasing the availability of something ->  storing water is a kind of adaptation increasing the availability of water  storing water is a kind of adaptation increasing the availability of water & an adaptation is a kind of characteristic of an organism ->  storing water is a kind of characteristic of an organism that increases the availability of water  a dry environment is low in availability of water & storing water is a kind of characteristic of an organism that increases the availability of water ->  storing water increases the water available to organisms in a dry environment  storing water increases the water available to organisms in a dry environment & waxy leaves are used for storing water by some plants ->  waxy leaves are used by some plants for increasing the availability of water in a dry environment  waxy leaves are used by some plants for increasing the availability of water in a dry environment & plants require water for survival -> waxy leaves are used by some plants for survival in a dry environment