Diffusion is the movement of substances from high to low concentration
osmosis is the diffusion of water through a semipermeable membrane from high to low water concentration
Answer: "symbiosis" ; or, a "symbiotic relationship" .
_____________________________________________________________
Answer:
D.Most bilaterians have tissues but some do not.
Explanation:
It would be the topsoil because Soil is usually layered. The uppermost layer is called topsoil and this layer contains humus, plant roots, and living creatures. The more humus found in topsoil, the more nutrient rich the topsoil and the better the conditions for growing plants. The middle layer is called subsoil.
