Which of the following effects does low nitrogen availability most likely have on the carbon cycle ?
a. more carbon dioxide is taken up by plants
b. carbon dioxide is trapped in the soil around plants
c. less carbon dioxide is removed from the atmosphere
d. carbon dioxide is converted to carbonates by bacteria

An ionic compound can conduct electricity when a it is dissolved in water b its crystals are ground into powder c it is in solid form d it is heated to just below its melting point

Ahair dryer is basically a duct in which a few layers of electric resistors are placed. a small fan pulls the air in and forces it through the resistors where it is heated. air enters a 1200 w hair dryer at 100 kpa and 22°c and leaves at 47°c. the cross-sectional area of the hair dryer at the exit is 60 cm2. neglecting the power consumed by the fan and the heat losses through the walls of the hair dryer, determine (a) the volume flow rate of air at the inlet and (b) the velocity of the air at the exit.

Current vs. forcewhat type of relationship does this graph show?