ASAP When you breathe in, you are creating a concentration of oxygen in the lungs, causing the oxygen to move towards the concentration in the blood stream.

Creating a high concentration

Towards the low concentration

Explanation:

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.

answer; i believe that the correct answer is ; males are hemizygous for the x chromosome;