They are called ice ages :)
your periods can be influenced by the people around you........ but this is hormonal .......periods are not contagious like a cold or the flu
rows. the vertical columns are called periods
periods, they are periods
Rows in the Periodic Table are called Periods.There are 7 periods in total.All the elements in period have same number of energy levels.
The time periods are called quarters and there are four of them.
The columns are called groups and rows are called periods. There are 18 groups and 7 periods.
The horizontal rows are called Periods. There are 7 periods.
They're called periods. Four periods make up a game of water polo.
The horizontal rows of elements in the periodic table are called periods.
The horizontal rows are known as periods.
The horizontal rows are called periods