<span>tympanum Im preatty sure</span>
Life is defined as the following, the condition that distinguishes animals and plants from inorganic matter, including the capacity for growth, reproduction, functional activity, and continual change preceding death.
Because those are traces of life meaning that there was life living there once, that life wouldn't have been able to survive there with how Antarctica is now.
A- valve replacement
b- stents
x- heart transplant