Dead leaves accumulate on the ground in a forest at a rate of 2 grams per square centimeter per year. At the same time, these leaves decompose at a continuous rate of 70 percent per year.

A. Write a differential equation for the total quantity $Q$ of dead leaves (per square centimeter) at time $t$:
${dQ\over dt} =$

B. Sketch a solution to your differential equation showing that the quantity of dead leaves tends toward an equilibrium level. Assume that initially ($t=0$) there are no leaves on the ground.
What is the initial quantity of leaves? $Q(0) =$
What is the equilibrium level? $Q_{eq} =$
Does the equilibrium value attained depend on the initial condition?
A. yes
B. no