Briefly explain the difference between the aerodynamic and canopy resistance. How do the relative values of these compare between a forest and a lake?Fully explain the roles of precipitation type and seasonality on precipitation variability, 2) Define porosity, specific yield, and specific retention. How are they related to each other, and how do they vary between soil particle sizes? 3) Fully explain the soil water content – pressure relationship. How does this relationship control unsaturated hydraulic conductivity?