Como nacen las estrallas?

Las estrellas nacen dentro de las nubes de polvo y se esparcen por la mayoría de las galaxias. ... La turbulencia profunda dentro de estas nubes da lugar a nudos con suficiente masa que el gas y el polvo pueden comenzar a colapsar bajo su propia atracción gravitacional. A medida que la nube colapsa, el material del centro comienza a calentarse.

step 1 ammonium can be absorbed by plants, but some is converted into nitrates which are better for plants to absorb. this is called nitrification. 2. step 2 the deer eats the plants and uses the nitrogen-containing proteins for cell growth. 3. step 3 bacteria in the soil conduct nitrogen fixation to convert nitrogen gas from the atmosphere into ammonium. 4. step 4 some of the nitrates are absorbed back into plants, but denitrification breaks down the nitrates into nitrogen gas released back into the atmosphere. 5. step 5 nitrogen is found in the urine, which gets broken down into ammonium through the process of ammonification. 6. step 6 plants absorb the ammonium and begin assimilation, the process to add the nitrogen to protein.