1. What is passive smoking?
2. What is the role of the Excretory System?
3. How does excretion help your body maintain homeostasis?

1. Passive smoking is the inhalation of smoke, called secondhand smoke (SHS), or environmental tobacco smoke (ETS), by persons other than the intended "active" smoker. It occurs when tobacco smoke enters an environment, causing its inhalation by people within that environment.

2.The excretory system is the system of an organism's body that performs the function of excretion, the bodily process of discharging wastes. The Excretory system is responsible for the elimination of wastes produced by homeostasis

3.Excretion is the removal of waste products and this system must function properly in order to maintain homeostasis. The kidneys filter urea from the blood, which forms after proteins are metabolized and combine it with water to become urine, which is propelled by the ureters to the bladder.

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just put in mind that others aren't perfect. we all have problems that we feel makes us low of the low. but know that you are special and unique, that is what makes you out of this world : ). you might think and feel that others judge you, but mostly other people are scared if people judge them. just be happy, spend time with family, smile because that is the greatest medicine. a happy life. hope this : ))