The migratory orientation of the Indigo Buntings can be primarily attributed to the species' accurate reading from their exposure to sky patterns and stars in the night sky which makes them move southward compared to other species. The study was pioneered by prominent zoologist Emlen.
Answer:
<em><u>ALKYLATING AGENTS</u></em>
Explanation:
Examples of alkylating agents include chlorambucil, cyclophosphamide, thiotepa, and busulfan.
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