Question

explain the evolutionary changes in energy realizing system​

Answer 1

Explanation:

here is your answer mate plz answer my question also

Answer 2

2) Single celled organisms amoeba or multicellular organisms like hydra and planarians obtain oxygen and expel carbon dioxide directly from the body by the process of diffusion. 3) In multicellular animals special organs are evolved.

Explanation:

here is your answer mate hope it helped you friend please mark me as brainliest and follow me I need more thanks please.