If the paper is regular in shape (a rectangle, for instance), fold it in half so that opposite edges meet. Then fold it in half the other way. The two fold lines will cross at the center.
It is a guide strip. If you were using wet ink or someting like that the ink would smear without the medal guide. With the metal guide it allows you to follow th rulers edge without contacting the ruler where it meets the paper. If the ink touched both the ruler and paper at exactly the same time you would have smears.
By using facts, and statistics.
In order to separate sand and salt without filter paper you need to place mixture in container with an excess of water. You use an excess of the solvent so that you decant the salt water with a pipette or what ever you are using. Remember you will want to stir the mixture so salt goes into solution. You can repeat adding water to your liking and removing more salt water and then dry the sand.
Because by placing a paper label on a juice container you are indirectly using water already because you need water to make paper.
It helps the environment. For e.g we could recycle paper into a paper bag and many other things can be recycled so atop using plastic bags.
Any grass including cogon can be pulped using chemicals and once pulp, can be used for making paper without using used paper.
To construct a shape in geometry is to draw a shape on paper using drawing instruments.
Study of... without knowing what the scientists are studying, you cannot know exactly what instruments they are using.
burn it
No!
1.477891880035400390625e+75
CSSdiv.center {text-align:center;} will center the text.div.center {margin: 0 auto} will center the div without centering the text.HTML
Without using charts or instruments, it is called "dead reckoning".With charts or instruments, even hand held, it is called navigation.
It is to assess students performance without using pen and paper
Paper can and is made from grass, straws, cotton, bagasse, hemp etc.
by using a litmus paper
try explaining it like a fact, not as an opinion.