Which was an argument used to dispute the theory of plate tectonics?

a. magnetic striping shows seafloor spreading.

b. mountain ranges in america and england match up.

c. mesosaurus fossils are found across long ocean distances.

d. continents cannot cut through the ocean floor.

Option D, Continents cannot cut through the ocean floor.

Explanation:

It was believed earlier that oceans were the land bridges that used to connect  different geologic plates of planet earth earlier, had now sank down and thus there exists no connection between the tectonic plates. Therefore,  without any link or connection, continents cannot cut through the ocean floor.

Also as per the Land Bridge Theory , there has been continuous shifting of dry land due to which identical land species on different continents were found.

Hence, option D is correct

it is either c or d and i know for sure it is not a or b

it has to be understood that the sea water contains a huge amount of sodium and chlorine ions and if they enter the cell of the atlantic cod fish, the cell will shrivel and the fish will die. to avoid such a condition, the fish uses active transport for the purpose of removing the ions against the gradient.

explanation:

the atlantic cod is not a maritime osmoconformer. its native application of salts is less than that of the seawater it lives in. it is continually falling water from the gills to the ocean via osmosis.

countering that, the fish is going to be swallowing seawater. but since its internal collection of salts is lower than seawater, the fish will want to go free of excess salt, and since that's going upon a gradient, then active transport, requiring energy, must be used to pump out the salt. much marine fish use the organs to filter out the salt and these fish discharge very straight urine.