19 a.) The length of a white board is 80 cm
and breadth its 65cm. calculate the area.
​

If you put a helium-filled balloon in the refrigerator, what will happen?

In the united states, tornadoes generally occur because of the freezing of ocean water underwater earthquakes meeting of cool and warm air masses shifting of warm and cool ocean currents

Which of the following list the divisions of the geologic time scale in order from longest to shortest