according to most scientists, cold fusion\nwill not be a practical source of energy on earth.\nwould be a…

according to most scientists, cold fusion\nwill not be a practical source of energy on earth.\nwould be a practical source of energy on earth if it were less expensive.\nwill be a practical source of energy on earth within the next few decades.\nwill always continue to be a practical source of energy on earth.

according to most scientists, cold fusion\nwill not be a practical source of energy on earth.\nwould be a practical source of energy on earth if it were less expensive.\nwill be a practical source of energy on earth within the next few decades.\nwill always continue to be a practical source of energy on earth.

Answer

Brief Explanations:

Cold - fusion is a highly controversial concept. Most scientists believe that the conditions required for cold - fusion to be a practical energy source on Earth are not achievable under current understanding. It is not considered a practical energy source currently.

Answer:

will not be a practical source of energy on Earth.