A(n) is substance in which one or more atoms have the same number of protons (i. e. the same atomic number).

advantage of using stem cells in medical research:

1.       it provides medical benefits in the fields of therapeutic cloning and regenerative medicine.

2. it provides great potential for discovering treatments and cures to a variety of diseases including parkinson disease, spinal cord injuries, diabetes, alzheimer’s disease and many more.

3. limbs and organ could be grown in lab from stem cells and then used in transplant or treat illness.

yes? sounds right, but you didn’t ask a question.

hey, what do you need . just post the question and i may be able to you : )

this would be called the responsiveness