Answer:
3 can you think of other examples of toxic substances not listed in the gizmo from science 101 at Stephen decatur high
D.
variable-ratio schedule of reinforcement.
A Cuticle, because a cuticle is waxy and it repels water and covers outside of a plant. Unlike a seed, phloem, ad xylem. If you think about your nails wouldn't you think cuticle as well?