I think it is 9.12 I might be wrong but I think it’s 9.12
While you didn't provide any following sources, healthy sources of energy for humans are usually considered to be different types of fruits and vegetables, lean meats, wholewheat grains, nuts, seeds, and healthy oils. All these constitute a healthy human diet and are a healthy source of energy.
Your answer is the nuclear envelope, The nuclear envelope is a double membrane of the nucleus that encloses the genetic material. It separates the contents of the nucleus from the cytoplasm.
