B is correct. Krypton is a noble gas which has a full outer shell of 8 electrons and is generally unreactive because of it.
You would expect to find elastic fibers
Resolving power<span> is the ability of an imaging device to separate (i.e., to see as distinct) points of an object that are located at a small angular distance or it is the </span>power<span> of an optical instrument to separate far away objects, that are close together, into individual images.</span>
During acclimatization over a few days to weeks, the body produces more red blood cells to counteract the lower oxygen saturation in blood in high altitudes. Full adaptation to high altitude is achieved when the increase of red blood cells reaches a plateau and stops.Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). ... At the beginning of exercise, your body removes the parasympathetic stimulation, which enables the heart rate to gradually increase.
D)all of them
