The correct answer is outer electrons. These are sometimes called 'valence electrons', and they are responsible for the element's properties and how it forms bonds. For example, elements in Column 2 are likely to form ionic bonds with elements in Column 16. This is because elements in Column 2 have 2 outer electrons, while elements in Column 16 have 6 outer electrons. If the element in Column 2 gives its 2 electrons to the element in Column 16, then the former will be stable because the energy level underneath will be complete, and the latter will be stable because it will have a complete outer energy level with 8 electrons.
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Drugs hit the same part of the brain that releases dopamine which makes you happy. Other things that by this part of the brain are good and sex. This part of the brain is called the "reward" circuit , which is part of the limbic system.
Answer:
Marker proteins are proteins that are incorporated in the cell membrane of a cell and based on these marker proteins a cell is identified. These proteins are very important while considering an organ transplant. If the marker proteins of the donor organ are not similar to the marker proteins of the original organ of the patient, then the immune cells will recognize the organ as foreign and the transplant will be rejected.
You can put up fencing around them. Such as a metal cage. Deer fencing works well too if you wanted to drape or build a tent around them with it. Both help with chickens, deer, squirrels, rabbits, and so forth.
