Abiology student is studying the effects of acid rain on tomato plants. he plants four tomato plants in identical pots, using the same type of soil to fill each pot. he places the pots together in the same location. they receive the same amount of sunlight and water each day. the only difference is the ph of the water used to water the plants. the first plant receives water with a neutral ph of 7, which will allow the student to better determine the effects of giving plants water that is more acidic. the second plant receives water with a ph of 5. the third receives water with a ph of 3. the fourth receives water with a ph of 1. what is the serious flaw in the design of this experiment?

he used multiple different types of water the experiment is to broad

Explanation:

he can't compare 4 different ph's in 1 experiment

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.