Based on thermodynamic experiments, the statement about entropy which is true is that: A. Entropy increases going from one trophic level to another.
Entropy can be defined as the tendency or ability of a chemical compound (substance) to achieve maximum disorder i.e. randomly distributed.
This ultimately implies that, entropy is a thermodynamic quantity that measures the degree of maximum disorder or randomness of a system such as an ecosystem.
In conclusion, entropy increases in an ecosystem by specifically going from one trophic (feeding) level to another.
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