3. What is the difference in the air temperature and humidity between the cP and ml air masses?
(1) The CP air mass is warmer and less humid.
(2) The CP air mass is colder and more humid.

(3) The mT air mass is warmer and more humid.
(4) The mT air mass is colder and less humid.

yes its like the dead sea which is full of salt which makes you stay afloat

so yes an egg will float in salt

that is wrong, its not thymus.

these muscles maintain the blood pressure in the vessels. the smooth muscles are innervated by nerves of the autonomic nervous system. when the muscles contract, they cause vasoconstriction of the vessels and increase blood pressure. when the muscles relax, they enable vasodilation of the   blood vessels hence reduce blood pressure.