Modern airplanes are built with waterproof seals around the windows and rivets are used to hold the metal sheets to the frame, forming the fuselage. The waterproof seals are to rivets as are to

tight junction; desmosomes

Explanation: Tight junctions are connected areas of the plasma. They form a water tight seal and acts as barrier against the movement of water, solute and prevents passage of materials between the cells or epithelial layers.

Desmosomes forms a strong connection that joins intermediate filament of adjacent cells, they can be viewed as rivets through the plasma membranes of adjacent cells.

omg wow lol

explanation:

the correct answer is modern american cars are not available due to trade restrictions.

trade between cuba and the united states have serious restrictions. the u.s. imposed an economic embargo on cuba, that among other things means that modern american cars are not available due to trade restrictions.

in response to some governmental actions of the authorities from cuba, president john f. kennedy proclaimed an embargo on trade between both countries in february 1962. the trade embargo remains active until this day and was implemented directly by the departments of commerce and the department of treasury.

in president trump’s administration, there is a national security presidential memorandum that "strengthens the policy of the u. s.", affecting trade with cuba.