Question: what is the difference between the terms regulator and conformer vs. endotherm and ectotherm?
Answer: Conformers or Poikilotherms Conformers must change their environment to survive temperature variations. The older term – cold-blooded – is less favored than ectotherms, which refers to animals that rely on the environment for their heat. Conformers include fish, reptiles, insects, amphibians and worms.