<span>A hapten is one of Ruthie's symptoms that is an example of an innate defense mechanism. The hapten is a molecule which is small and it is not antigenic. The hapten also stimulates the process of production of antibodies in our own body.</span>
The correct order of structures in the body is: atoms, molecules, organelles<span>, cells, tissues, organs, </span>organ<span> systems, organisms </span>
The period of revolution of an object in the Solar System is the time it takes an object to travel around the Sun.
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Considering that the roots are a form of biological weathering (so/thus) erosion (from/due to) changing weather also (disintegrates/breaks down)the rock.
