Answer:
The correct answer is A. a rotating cloud of dust and gas.
Explanation:
Nebulae are regions of the interstellar medium (clouds) made up of gases (mainly hydrogen and helium) and dust. In other words, nebulae are concentrations of gas in which we find hydrogen, helium and stardust in greater quantities. They are structures that are actually very important for the universe, this because inside it is the place where stars are born, which arise due to the condensation and aggregation of matter. The nebular theory states that the Solar System reached the form current from a solar nebula (a gas cloud), more than 4.5 billion years ago. The large cloud of molecular gas was affected by a certain phenomenon that would have taken place in the vicinity. Like the explosion of a supernova or the passage of a star that would produce a strong gravitational impact. The result of this event made the matter agglomerate in different places. The high concentration of matter caused the nebula to collapse. Becoming a protostar, (bodies whose characteristic is to be surrounded by clouds and contain preplanetary matter inside), that is, gaseous matter in the outermost part and solid inward. At the core of this structure, the temperature is so dominant that nuclear reactions take place to compensate for the gravitational force. This leads to a hydrostatic equilibrium and the formation of a fundamental star: the Sun. The rest of the mass flattened, forming a protoplanetary disk where the protoplanets were being formed, which would evolve to become the current planets, their satellites and the others bodies of the solar system.
Nutrients
If that's not the answer maybe it can be amino-acids
Supportive nursing care at the beginning of the mother-infant relationship should include encouraging the mother to help out with simple aspects of her newborn's care. This is necessary in order to promote attachment between the mother and the baby.
No i don't think so i have not heard any one say that there is life anywhere else
Ans.
Fungi are eukaryotic (both unicellular and multicellular), heterotropic organisms that depend on plants, animals, or organic dead matter for food. Fungi reproduce either sexually or asexually.
-Mating types show molecular mechanisms to regulate compatibility in sexual reproduction in fungi. The organisms of class basidiomycota, such as club fungi, have bipolar mating system, means they have both positive and negative mating strand. The option 1). correctly matches with D). club fungi.
-The fruiting bodies of fungi are defined as the specialized structures that produce spores. In sac fungi, fruiting bodies are formed sexual reproduction that fills thousands of asci or spores in it. The option 2). correctly matches with C). sac fungi.
-The chytrids show one of the early lineages of fungi. They possess a cell wall of chitin, a flagellum, absorptive structures for nutrition. The option 3). correctly matches with A). chytrids.
- The common molds include various microscopic fungal species, which grow in the form of hyphae (multicellular filamentous structures). They are found nearly everywhere and show all forms of nutrition. They feed from dead organic matter, plants, and animals (as using them hosts). The option 4). correctly matches with B). common molds.
