Select the correct statement.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. The pyramid of energy is always upright.
The pyramid of energy is always upright because energy is lost at each successive trophic level in an ecosystem. As energy flows from producers to primary consumers, then to secondary and tertiary consumers, a significant portion (around 90%) is lost as heat during metabolic processes. This means less energy is available at higher trophic levels, resulting in a pyramid shape where the base (producers) is largest and subsequent levels progressively decrease in energy content.