1.The solar system consists of the Sun, planets, dwarf planets, moons, comets, asteroids, meteoroids, dust, atomic particles, electromagnetic radiation, and magnetic fields. Each component of the solar system has its own specificproperties.
2.Even more difficult to observe, but more important to the understanding of cometary activity and ultimately to the origins of the comets, are the internal physical properties, including the volatilecomposition, dust to gas massratios, and the thermo physical properties of the nucleus: thermal conductivity, pore size, ... I hope this help.
Natural selection affects undesirable traits, because as time pass on, the undesirable traits will be lost due to the competition with the desirable traits. For an example, the Rabbits that runs slower than normal rabbits, will eventually die due to the natural selection because the normal ones will run faster than the undesirable one.
Explanation:
Denitrification is basically a biochemical phenomenon where nitrate is used by the bacteria living in the soil for the process of their respiration instead of using Oxygen from the air, consequently, the nitrates are converted into nitrous oxide and nitrogen gas. The process of denitrification is accelerated mostly in the wet and warm soil where there is lot of nitrate available.
This process is exhibited by Alkaligenes, Pseudomonas and Bacillus etc. Most of the bacteria involved in this process are facultative aerobially heterophs who has the ability of switching to denitrification from normal respiration when they find that the normal oxygen is running out.
