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What is a structure built across the water to hold water back?
A dam is a structure built across the water to hold water back.
Why do Paramecium need to remove water?
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.
How does paramecium perform the process of excretion?
they take in microorganisms that digest it and then the paramecium throw it back up
What is beach drainage?
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.
What method of locomotion do paramecium use?
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.
A structure used to hold back water?
it is a dam that holds back water and it blokes the water like lakes,rivers and the ocean.
What structure built across a river to hold back water?
A dam.
Paramecium have hair-like structures on the outside of their body called?
Thehairs on the paramecium are called cillia, it then is able to move in all directions
How do 100 story buildings get water to the top floor?
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.
Why do you find a reservoir near a dam?
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.
Why is the human heart a two-part pump?
One part takes in blood, the other pumps it back out. One part takes in blood, the other pumps it back out.
Where is the water refill for the back window wiper on a 2001 Chevy venture?
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
