Blood needs to flow faster around the body in order to supply the muscles with oxygen for respiration
The answer your looking for is B different patterns of gene expression
Carbon dioxide is what humans exhale, giving trees carbon dioxide will produce oxygen
The most basic reason that cells are stained is to enhance visualization of the cell or certain cellular components under a microscope. Cells may also be stained to highlight metabolic processes or to differentiate between live and dead cells in a sample.
