Which phrase accurately characterizes sexually transmitted infections (stis)? a. are caused by bacteria, viruses, or parasites always cause visible symptoms are rarely transmitted by sexual contact can be contracted only by women

Smoking damages the respiratory system by inhalation of a foreign substance, that is absorbed and residue is left behind on our lungs sponge like substance. the gas that is inhaled also increase your blood pressure and dilates your blood vessels. also the process of inhaling and exhaling the smoke it causes irritation to the throat and mouth. smoking can cause lung cancer and other respiratory and circulatory diseases. 

Organic -  derived from plants or animalscorrosive -  capable of destroying by a chemical action  particulate -  tiny particle that can be dispersed in a gas