Question: Quadric Surfaces and Space Curves

Can someone help me with parameterizing equations and plot it into maple to show the graph For example x^2 + y^2 + z^2=1 How do i parameterize it for each of the traces and turn the equation into a space curve in R^3? Also, how do i plot the surface and the curves together on the same plot, using a grey wire frame for the surface, a black line for the x=k trace, a blue line for the y=k trace and a red line for the z=k trace? Thx
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