Easy. Answer is oxygen because it says which one was missing before any life was on earth. And in order to have life on earth you need oxygen!
:)
Answer: left subclavian vein, right subclavian vein
Explanation: The thoracic duct carrying lymph empties into a large vein which is located at the left side of the neck. Its called the left subclavian vein. Also the right subclavian vein empties into a large vein found in the right side of the neck, itz called the right subclavian vein.
Gizmo student is psychologically chemically imbalanced and a brain surgeon
We need options :) but stem cells are a amazing type of cells that are able to develop into many different types of cells <span>First, they are unspecialized cells capable of renewing themselves through </span>cell division<span>, sometimes after long periods of inactivity. Second, under certain physiologic or experimental conditions, they can be induced to become tissue- or organ-specific cells with special functions. In some organs, such as the gut and bone marrow, stem cells regularly divide to repair and replace worn out or damaged tissues. In other organs, however, such as the pancreas and the heart, stem cells only divide under special conditions.</span>
50 is 16 times greater than 34
