Amira is concerned about putting her baby on his stomach to sleep because of the risk that he might stop breathing, usually during the night, and die suddenly without an apparent cause. In other words, she is concerned about:a. shaken baby syndrome
b. sudden infant death syndrome
c. Down syndrome
d. marasmus

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. 

Wat r u trying to

Stimulants speed up the central nervous system.