The movement of air between the atmosphere and the lungs is known as breathing or

Most likely inhalation. Inhalation and breathing are the same thing.

This is broad... One could say inhalation, but exhalation is also a component of breathing. If you are given the option on this homework your answer should be Ventilation, or the act of moving air in and out of the lungs.

1- a    2 - d3 - e4 - f5 - c6 - g7 - h8 - b

Depression is lifelong, though you can get medication to with it. the difference between sadness and depression is that sadness lasts a little bit, depression last a long time and it goes on and off. people usually get depression through experiences they have been through, or genetics.