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It is because ur mouth is a dark and warm place which is the perfect environment for bacteria to grow and survive. It doesn’t matter if u brush it really well on ur tounge there and groves in ur tounge where the toothbrush bristles cannot reach and clean so that is where the bacteria lives.
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Water molecules consist of 2 Hydrogen and 1 Oxygen atom. They are bonded by a polar covalent bond, meaning the electrons shared by the covalanet bonds are not evenly distributed. Oxygen is more electronegative than Hydrogen and will pull the electrons from its bonds with Hydrogen closer to itself. Thus results in a partial positive dipole on the Hydrogen of the water molecule and a partial negative dipole on the Oxygen of the water molecule. These partial charges allow water to hydrogen bond with one another through a process called cohesion.
The blood cells likely placed in a "hypotonic solution".
<u>Option: A</u>
<u>Explanation:</u>
When human blood cells are immersed in a solution with a low concentration of solute than is present in cells, osmosis allows water to pass through the cells, allowing the cells to get swollen; such a fluid is hypotonic to the cells. But when held in a solution with a greater concentration of solute, osmosis allows water to pass out of the cell, the cell is smaller and crenated in form; then a solution is hypertonic to the cells.
Healthcare facilities preserve human blood cells in a plasma solution that has the proper salt and protein ratios. Such solution is formulated to be mildly hypertonic to the red cells, thus maintaining the integrity of the cells and avoiding hemolysis.
Hey :) hope your day is going well. :P I listed some information below, that may or may not help!
<em>"Evaluate the following statements. volcanoes are only found along coastlines."</em>
<u><em>False!</em></u>
<em><u>Most are found along plate boundaries and hot-spots. :) </u></em>
They are found along plate boundaries because when the plate's collide together, <u>they may leave cracks</u> behind and may turn later into small hills and eventually grow even larger as time goes, and <u>produce magma from under the earth's layers</u>.
Hope this helped you, and as always remember if you need any more help, mssg me and i'll answer any questions you may have. <u>Have a great day. :)</u>
Answer:
The weight of an object at the surface of a planet is proportional to the planet's mass and inversely proportional to the square of the radius of the planet.
