The answer is true.
<span>Antigens are molecules capable to induce an immune response, "targeted" by antibodies. Antigens are usually proteins, peptides, or polysaccharides but they can combine with lipids and nucleic acids and form more complex antigens (lipopolysaccharide). Usually, antigens are exogenous (foreign substances), but sometimes are part of the host itself (in an autoimmune disease). All of them contain an epitope which is a part of an antigen that can be recognized and bound by an antibody.</span>
Answer:
were are the answer choices
Explanation:
Answer:
C. Salt marshes are not productive habitats
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Pretty sure the realistic answer is A. They had traits that helped them adapt the environmental changes
