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female and male differ.

if you are a male - hair growth in new places like pubic area, sholders broaden, voice deepens, get taller

Female- wider hips,increase in height, increase in fat percentage, breast development, hair grows in arm pits and pubic area.

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Heather Tremblay

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1y ago
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Wiki User

16y ago

sharpening a pencil, ripping a piece of paper, writing on a piece of paper

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11y ago

putting glue on something, because once it sets you cannot change it back.

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12y ago

A useful physical change is the melting of ice as it goes from a solid to a liquid without producing new materials. Another example would be the drink of clothes on a clothes line.

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10y ago

There are changes or developments brought by chemistry that can be observed all over in your school, home and community. Cooking food is a prime example.

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11y ago

well, paper, spit and even skin

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Q: What are some useful physical changes?
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Useful and harmful changes to the environment?

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Some useful chemical changes are when a solid changes into a liquid. Such as when ice melts it is turned into water.Sorry but I am afraid that is wrong.Freezing, melting and evaporation including sublimation, i.e., Changes of State, are all physical, not chemical, changes.As for "useful" chemical changes.... Almost all biological processes, the conversion of fuel to its oxides etc with consequent release of heat &/or light, the list goes on!


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The changes talking place in our surroundings and which are useful to us are called Useful changes. The changes which are not useful but harmful are called Harmful changes


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Some physical changes with steel occur when you melt the steel or when you crush steel.


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