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Which two events occur when gravity causes a nebula to collapse into itself?
A. Nuclear fusion starts.
B. The nebula cools down.
C. A supergiant forms.
D. A new star forms.

Respuesta :

The two events that occur  when gravity causes a nebula to collapse into itself are:

A. Nuclear fusion start.

B. A new star forms.

Explanation:

  • Nebula are giant clouds of dust and gases.
  • These clouds are considered as progenitors of stars and planets.
  • The gravitational pull within these giant clouds result these large masses to collapse towards their centre.
  • The gravitational collapse results in tremendous rise in temperature till a point where nuclear fusion begin .
  • The stars are born out of such mechanism and act as a source of heat and light in universe.
25lomonosovliana

Answer:

Its a and d

Explanation:

I just did it on a p e x

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