Answer:
In autoimmune diseases, such as lupus, multiple sclerosis and rheumatoid arthritis, people produce antibodies that stick to their body's own proteins and attack healthy cells.
Explanation:
Answer: d- because a model is never exactly the same as the thing it represents
<span>Both photoautotrophs and chemoautotrophs synthesize organic compounds from (inorganic) carbon dioxide, a process known as carbon fixation. Photoautotrophs get the energy to perform these reactions from light. Chemoautotrophs get it from electron donors such as hydrogen sulfide and ammonia. Cyanobacteria, by contrast, convert nitrogen from the atmosphere into ammonia, a process known as nitrogen fixation.</span>
The answer is C) Two. Dipolar means there are two magnetic poles charging with the same magnitude but opposite polarity.
Their valency is one and both belong to the third period
