If the source of the pollution is stationary or immobile then that is called _____?

If the source of the pollution is stationary or immobile then that is called _____?

اگر آلودگی کا ماخذ اسٹیشنری یا متحرک ہے تو پھر اسے _____ کہا جاتا ہے؟
Explanation

A point source of pollution refers to a fixed or stationary location, like a factory chimney or wastewater outlet.

It contrasts with mobile sources (like vehicles) or diffuse sources (like agricultural runoff).