I think it would be 50% because it could land on heads just as much as it lands on tails. its a even chance it could land on whichever it chooses to.
According to the Doppler effect, the sound of a police car siren is louder and high pitched as it approaches the observer.
The "food" is stored in the endosperm.
Out of the choices given, the water rises and falls with precipitation. The water table is the level below where the ground gets saturated with water. The correct answer is B.