Trophic levels = Energy flow: Producers → Herbivores → Carnivores → Top predators.
A trophic level represents the position of an organism in the food chain based on its source of energy.
Different types of trophic levels in an ecosystem include:
Find the values of \( x, y, z \) if the matrix \( A \) satisfies the equation \( A^T A = I \), where
\[ A = \begin{bmatrix} 0 & 2y & z \\ x & y & -z \\ x & -y & z \end{bmatrix} \]