They are warned about contracting Toxoplasma.
<span>It leads to an increase level of biodiversity.</span>
Answer:
C) Dendritic cells.
Explanation:
Dendritic cells are types of immune cells that carry out immune responses by presenting antigens on its surface to other immune system cells.
They are derived from the bone marrow and have tree-like structures. Dendritic cells are found in the skin, lungs, nose stomach and intestines. They are phagocytes and are antigen presenting cells (APCs).
Dendritic cells work by capturing the antigens from foreign bodies and processing and presenting these antigens on their cell surfaces for recognition and action by other cells of the immune system.
Answer: Covalent bonds are a convenient way of describing the way that a few negatively charged electrons can fix their average location so as to hold two positively charged nuclei together. Chemists know about covalent bonds, electrons do not. All electrons are constantly in very fast motion, they are all indistinguishable from one another, and we have to think in terms not of the position of each electron specifically, but of the average distribution of electrons in a molecule. "Bonds" and "localized electrons" are a convenient fictional calculus and accounting system that allows chemists to work out the properties of molecules and the mechanisms of chemical reactions.
Think of a baseball team made up of nine identical siblings, who constantly and rapidly change fielding positions. You can still describe the team as having a short stop or a second base man, even though you cannot identify an individual person with any role.
Explanation:
