Observe the graph and select the correct option:
The species-area relationship follows the equation: \[ S = C A^Z \] where:
- \( S \) is species richness,
- \( A \) is the area,
- \( C \) and \( Z \) are constants.
This equation, proposed by Alexander von Humboldt, suggests that species richness increases with area but not linearly.
Derive an expression for maximum speed of a vehicle moving along a horizontal circular track.
If the mean and variance of a binomial distribution are \( 18 \) and \( 12 \) respectively, then the value of \( n \) is __________.