Can occur when the body loses too much water content and essential body salts.

Dehydration

Explanation:

Dehydration is the loss of water and salts from the body.

It may be due to dysentery/diarrhea.

It occurs because there is less time for absorption of water and minerals in large intestine as the food is passed out through alimentary canal within a short span of time during diarrhea.

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.

in a chemical reaction, the atoms and molecules produced by the reaction are called products. no new atoms are created, and no atoms are destroyed. in a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.