why is the green blue patches found only on the positive terminal side of the potato

When we connect ends of a battery by copper wire with potato by inserting in it. The electrons from negative potential of battery through copper wire reach in potato where they go inside the potato. This process release electrons in potato and increase the negative particles. When these electrons reach the other end ( positive end) of copper it reacts with part of copper wire inside potato and make a complex of copper which is green in colour.


 

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Having your first period tells you that your body has changed, and you are becoming a woman who will be able to have a baby, if and when you want to. The period (the days that you lose blood through the vagina) is part of a 'cycle' of hormone and body changes.
During each cycle, the lining of the inside of your uterus (womb) gets thicker, so that if the egg (ovum), which is released from your ovary each cycle, is fertilised by a sperm, the uterus is ready to provide a place for the baby to grow.
A period is when the lining separates from the rest of the uterus because it is not needed for this egg to grow. The old lining is 'lost' and the uterus gets ready to make a new lining for the next egg.
The 'loss' is mostly blood, which can be bright red, dark red or dark brown, and sometimes has some clots (dark lumps of blood) in it.
How long a period lasts and the time between periods varies for different women.

The first period happens for many girls between the ages of 12 to 14 years, but quite often it is earlier (from as early as 9 years old) or later (up to 16 years).

Hope this helps.

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oh sry by mis

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