What intracellular structure do unicellular organisms such as amoeba and
paramecia have that allow them to survive in a hypotonic soln?
( i need asap )

The structure that helps these organisms in hypotonic environments is the contractile vacuole.

As water enters the cell from the less-solute environment, the cell would normally burst; however, the contractile vacuole takes up this water and pumps it back out of the cell.

A.(nh4)(2co3)is the correct answer 

answer: mole of the gas

answer: mole of the gasexplanation:

answer: mole of the gasexplanation: this is because 1 mole of a gas is 22.4dm³, which is use in ideal gas