True
False
True
True I think
Answer:
It is dangerous to swim alone when you don't know swimming. Because there should be someone to save you.
B. The product is sold through an established retail store.
Answer:
I guess you could talk about a negative or positive experience, something that happened to YOU, something that speaks.
Explanation:
Answer:
inhalation
diaphragm comtracts
air flows through trachea
air flows through bronchial tube
air flows into alveoli
lungs expand
diaohragm relaxes
gas exchange occurs