Acell is placed in a water solution with the same salt concentration as the cell. the cell is placed in a hypotonic solution hypertonic solution isotonic solution

Isotonic solution

Isotonic solution is the solution in which the concentration of a solute is the same inside and outside of the cell. The concentration of solute is at equilibrium inside and outside of the semi- permeable membrane of the cell. The shape of the cell will remain unchanged as neither water nor solute will come out or enter the cell.

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.

glacial erosion, the picking up and movement of earth beneath a glacier, is also referred to as plucking. erosion and transportation of individual pieces of bedrock, especially large "joint block occur as a result of this glacial erosion. plucking is type of erosion in which rocks become frozen into the bottom and sides of the glacier.as the glacier moves downhill it 'plucks' the rocks frozen into the glacier from the ground.