When there is a drought, the leaves curl and wither because it uses the water and energy in that is stored up in that part of the fern. When there isn't a drought and it rains, the fern absorbs the water and nutrition from the soil and heats and processes it into energy.
When there is a drought, the leaves curl and wither because it uses the water and energy in that is stored up in that part of the fern. When there isn't a drought and it rains, the fern absorbs the water and nutrition from the soil and heats and processes it into energy.