Author Question: Which sequence correctly describes the steps in the life cycle of a star? a. protostar, stability, ... (Read 65 times)

K@ · **on:** Aug 22, 2018

Which sequence correctly describes the steps in the life cycle of a star?
a. protostar, stability, nuclear fusion, red giant, supernova
b. supernova, red giant, nuclear fusion, stability, protostar
c. red giant, protostar, stability, nuclear fusion, supernova
d. protostar, nuclear fusion, stability, red giant, supernova
e. nuclear fusion, protostar, stability, supernova, red giant

Question 2

The water for Earths ocean originated from ____.
a. volcanic activity and other planets
b. volcanic activity and comets
c. other planets
d. the sun
e. solar nebula