At which level of complexity does evolution occur?

A: Ecosystem

B: Community

C: Population

D: Species

E: Organism

The organism is the level of complexity where evolution occurs.

Answer: Option E

Explanation:

Evolution is something that how an organism is adapting to environmental changes from time to time. The evolution effects will be seen in species, population, individual, community.

Organisms are part of there occurs an interaction with the organism in different forms. When weather conditions become cold then the organisms will freeze.

Traits are being used by many of the species in order to protect their lives from the change in temperature. In the way adapting to the temperature by some organisms will be surprising.