OPTIONS:
a). lose energy;
b). dormant state;
c). to move people;
d). migrate;
e). inactive;
f). threatened;
g). rays or beams;
h). It decreases;

You are presented with the quiz "Orbiting spacecraft reentering the Earth's atmosphere" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "friction causes an object to lose energy" and "dear Ashlee, The heat in the reentry phase is due to friction between the spacecraft and the air". So, what's the best answer to the question?
Answer:
a).