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.

science-ocean floors and habitats study guide by volleyballqueen3817 a major advance in ocean-floor mapping. list four sections of the ocean floor. algae that use sunlight to produce their own food through photosynthesis. all of the feeding relationships that exist in a habitat. drying out, predators, find food.

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.