Why do planents revolve around the sun ?

How would i answer this in a exam. orange - sea temperature is over 27 red arrows - tropical storm routes

Match the graph type to its description. 1. uses symbols to describe information pie 2. compares different quantities at the same point in time line 3. compares increases and decreases in a quantity over a period of time bar 4. shows the relationship of parts to each other and to the whole pictograph

How many time zone are there on earth