the radiations that are used to treat cancers are of the gamma type. primarily emitted from cobalt-60 (a radioactive isotope). and it is more controlled than other radiation exposures. i.e. solar radiation which is not controlled.
hope that this helps.
Answer:
Artificial selection
Explanation:
Artificial selection is the identification by humans of desirable traits in plants and animals, and the steps taken to enhance and perpetuate those traits in future generations.
"Zygospores" is the one choice among all the choices given in the question that helps in the asexual reproduction of black bread mold. The correct option among all the options that are given in the question is the first option or option "a". I hope that this answer has come to your help.