The collision theory<span> is based on the assumption that for a reaction to occur it is necessary for the reacting species atoms or molecules to come together or </span>collide<span> with one another.\</span>
Upper epidermis. The cuticle on upper epidrrmal layer prevents excessive water loss
Egg, larva, pupa and adult
Any plant that have ceased elongation. Ex. Hemp and flax
Nose, mouth, pancreas, kidney, tell me if i missed some
