Can we move head to all sides ?

Can we say that all free electrons move in the same direction in a conductor when some potential difference is applied across it ?

We observe the bulb glowing when the switch is 'ON'. Can we conculde that charges instantly move from the 'switch' to the bulb ? Discuss.

In a game 3 coins are tossed.A person is paid Rs.5, if he gets all head or all tail and be in supposed pay Rs.3 if he gets are head or 2 heads.What can be expert to win on an arrange per game.

The species diversity_________whem we move towards the equator whereas it _______when we move towards the poles.