I have a quiz and the time is unlimited. This sentence appeared to me. The timer can only start after the setup process is finished.
What does this timer mean? Why does that time appear unlimited, please explain

Earth's rotation cause the global convention current between the equator and the poles

Change in speed or direction : )

Answerhave membrane-bound organelles;

Following are the  advantages of the parametric equations: 1) they can be used to graph curves that are not functions, like the unit circle.2) the parameter can be used to represent the quantity that is  useful to  provide us with better information about the graph.3)  it is useful to convert between rectangular equations and parametric equations.with specific reference to chemistry,  parametric equations are employ for solving hydrogen and hydrogen-like ions, quantum mechanically. herein, cartesian coordinates are converted in spherical polar coordinates. the solution obtained, when plotted on spherical polar graph paper, provides visualization of atomic orbital such as s,p,d and f.