I would most likely associate this with either pneumonia (acute) or if patient is older some form of COPD; possibly Chronic Bronchitis.
Answer:
Steel
Explanation:
In fact, sound waves travel over 17 times faster through steel than through air. Sound waves travel over four times faster in water than it would in air
Answer:
Chronic hepatitis B and hepatitis D
Answer:B
Explanation: Since there’s more snakes they’ll outweigh the rats and end up eating them until they’re gone unless the snake population decreases
Placenta
It also does not allow the maternal and fetal bloodstreams to mix
