What type of smoke screen provides a thick, vertical barrier between enemy and friendly troops?

The answer is a smoke curtain. It is a dense, vertical development of smoke. It is positioned between friendly and enemy positions to avert or damage enemy ground observation of friendly positions. Since the smoke curtain is not placed directly on friendly troops, it will not hinder friendly operations. Also, it activates in the event of a fire, on condition that a means of diverting smoke away from a preferred location or protecting an area from direct smoke infiltration.

relationships play a major role in a human's emotional and mental wellbeing. healthy relationships with the people around you are even linked to a smaller production of cortisol, a stress hormone.

answer: accepted answer: aquatic animals use the oxygen dissolved in water to carry out respiration. since the amount of dissolved oxygen in water is low as compared to the amount of oxygen in the air, therefore the rate of breathing in aquatic animals is much faster than it is in terrestrial animals.

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