Factors that effect formation of cyclones : (a) Wind speed
(b) Wind direction
(c) Humidity & Temperature
(d) All of these
rrect the following statements by replacing the highlighted word:
Warm air is heavier than the cold air.
lighter
The pressure of the air decreases if the speed of the wind is decreased.
Cyclones are constructive because they can damage houses, telephones and other communicati
systems, agriculture, trees etc.
The even heating of the earth surface is the main cause of wind movement.
The overfilled bicycle tube bursts because the pressure inside it becomes less than the atmospheric
pressure outside.
Sologna
ct four precautions you should follow when you are hit by a cyclone:
Yes/N
Precautions
obaro mot

oxygen is the first element in group 16 (via) of the periodic table. the periodic table is a chart that shows how chemical elements are related to each other. the elements in group 16 are said to belong to the chalcogen family. other elements in this group include  sulfur, selenium, tellurium,  and  polonium.  the name chalcogen comes from the greek word  chalkos,  meaning "ore." the first two members of the family, oxygen and sulfur, are found in most ores.

oxygen is by far the most abundant element in the earth's crust. nearly half of all the atoms in the earth are oxygen atoms. oxygen also makes up about one-fifth of the earth's atmosphere. nearly 90 percent of the weight of the oceans is due to oxygen. in addition, oxygen is thought to be the third most abundant element in the universe and in the solar system.