Answer: Ectotherms depend mainly on external heat sources, and their body temperature changes with the temperature of the environment. Animals exchange heat with their environment through radiation, conduction—sometimes aided by convection—and evaporation.
yes. That is True. A buisness letter is formal, and uses profession writing and formatting. A friendly letter is playful, and does not need to be formal, and respectful. (In writing terms) A buisness letter is professional and serious. It is True.
~Silver
You would cite by copy the mla format to owl city
I think that the correct answer would be letter D.
I hope this helps !
