You leave out one pertinate item; what are you trying to teach, difference in types of soil, planting seeds and showing how caring for the dirt/seed/plants causes the seed to grow, side by side with exactly the same minus care or limited care. The diference can also be a lesson. E.G. sand, clay, crop land, soil from around several different; Maple, oak, pine, ...

K9s will change your life forever.
Liked this answer? Tell your friends about it
Add Your Comment (or add your own answer)
Insert: