Answer:
because he give heat and energy
Potential energy is first transformed into kinetic energy as she pedals, then gravitational as she coasts down the hill.
Oct 27, 2015 - In The Martian, astronaut Mark Watney and his crewmates onboard ... is grossly unqualified to challenge the science behind The Martian. ... of Space on the Law of the Sea, that Treaty has thus far been signed by only a handful of nations, none of which have their own ability to launch astronauts into space ...
