Answer:
ggggggggggggggggggggguuuuuuuuuddddddddddddddddddddddddd
Explanation:
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The correct answer is antigens and epitope.
An antigen is a substance which triggers an immune response in an organism. This can be either a foreign substance, such as a pathogen, or a specific part of the host organism (in this case this is an autoimmune response). The presence of an antigen activates a specific part of the immune system, called antibody. Each antigen has a specific antibody, which is tailored by the immune system accordingly. More specifically, the antibody has a specific structure, called paratope, which is complementary and binds like a key to a specific structure of the antigen, called epitope.
You decrease the kinetic energy by either stopping the object and let it rest (which would give it potential energy) or like the other person said by changing the slope
