Which among the following concepts best explains the theoretical balance of all large portions of earths lithosphere?

The answer is isostasy. The theory states that equilibrium is constantly sought as the lithosphere floats on the denser mantle beneath. One theory of isostasy is that places of high elevation such as mountains have low densities 'roots' pressing deep into the mantle.

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.

oak trees? ? what was listed