A pair of contractile vacuoles.
A dam is a structure built across the water to hold water back.
The simple answer is osmosis. Osmosis is the movement of water from a dilute solution to a more concentrated solution through a semi-permeable membrane*. Any animal in freshwater has a higher concentration of dissolved substances in its cells than the surrounding water. A Paramecium is enclosed by a semi-permeable cell membrane, which lets water in but prevents most dissolved substances leaking out. Under these conditions osmosis will occur and the cell will gain water. To prevent itself swelling up and bursting Paramecium has a contractile vacuole, a structure in the cell which fills up with water and periodically expells it back into the surroundings. * The semi-premeable membrane is also called partially permeable or selectively permeable, which all mean basically the same thing.
they take in microorganisms that digest it and then the paramecium throw it back up
It is when a drain is installed under a beach. it takes all the water from under the sand and either pumps it to a pump station, which takes the water back to the sea, or just pumps it straight back to the sea.
Paramecium uses cilia, which are like tiny hairs all around the organism, to pull itself through water. Sometimes, not all the cilia move in the same direction, so the cell spirals as it pulls itself through the water.
it is a dam that holds back water and it blokes the water like lakes,rivers and the ocean.
A dam.
Thehairs on the paramecium are called cillia, it then is able to move in all directions
Water is moved to the top floors of high buildings via pumps, which lift the water in stages. We may also see check valves, which prevent the water from flowing back down the pipes. The pumps will be placed at intervals up through the building so that one pump doesn't have to develop all the pressure necessary to lift the water all the way to the top. The lifting of the water is done in stages with pumps.
The dam is the wall or structure that holds back fresh water. The reservoir is the whole structure, which includes the dam wall and stored water.
One part takes in blood, the other pumps it back out. One part takes in blood, the other pumps it back out.
the rear wiper uses the same water tank as the front wiper and it is located in the engine area on the passenger side. There are 2 pumps in the tank -- one for the front, one for the back