posted by Matebane Jack .
Name any 3 mineral elements that are required for the formation of membremes.
Since this is not my area of expertise, I searched Google under the key words "elements in membranes" to get these possible sources:
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.