Consider the following model for the populations of rabbits and wolves (where $R$ is the population of rabbits and $W$ is the population of wolves).

$$\begin{array}{rcl} \displaystyle \frac{dR}{dt} & = & 0.125 R (1 - 0.0005 R ) - 0.0025 RW \cr & & \cr \displaystyle \frac{dW}{dt} & = & - 0.02 W + 5\times 10^{-5} RW \end{array}$$
Find all the equilibrium solutions:
(a) In the absence of wolves, the population of rabbits approaches .
(b) In the absence of rabbits, the population of wolves approaches .
(c) If both wolves and rabbits are present, their populations approach $r =$ and $w =$ .