Many plant's adaptation has been the production of a waxy cuticle to 'seal-off' the leaf from the environment and reduce water loss.
(Many plant's adaptation; has been; the production of a waxy cuticle to 'seal-off' the leaf from the environment and reduce water loss)
Many plant's adaptation
has been
the production of a waxy cuticle to 'seal-off' the leaf from the environment and reduce water loss