Through studies of insect Malpighian tubules, researchers found that K accumulated on the inner face of the tubule, against its concentration gradient. What can you infer about the mechanism of transport

i believe it would be the lungs.

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.

maybe because its impossible for balloons to lift a whole entire house.

the answer is