It is antigen a,antigen b and no antigen
The building blocks of proteins are amino acids, which are small organic molecules that consist of an alpha (central) carbon atom linked to an amino group, a carboxyl group, a hydrogen atom, and a variable component called a side chain
The research and studying optical nervous system. into eye
<span>The statement, a cell can only respond to signals from other cells, not from the physical environment is false. Cells can absolutely respond to environmental changes. In fact, a quote by Luther Burbank supports this and that quote is heredity is nothing but stored environment.</span>
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The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates among atmosphere, terrestrial, and marine ecosystems. The conversion of nitrogen can be carried out through both biological and physical processes.
Explanation:
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