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.
Answer:
Persepolis and Susa, which replaced Pasargadae as capital of the Persian empire
Explanation:
Answer:
They carry blood which is low in oxygen and high in carbon dioxide into your lungs so that the carbon dioxide can be blown off, and more oxygen can be absorbed into the bloodstream. it is pumped all around your body to supply oxygen to cells and organs.
Can i get brainliest plz?
The answer to this question is 20 percent.
In general, women has more roles during the fertility process, so their margin of error will be significantly higher compared to the male counterparts.
The male's role during fertility process is to insert the sperm, while the women have to face potential mistakes in their uterus, their nutrition, their eggs condition, their hormones, external accidents, etca
