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A hypothetical scenario illustrating the process of chemical selection
An elephant can use its trunk for a variety of purposes. This one is wiping its eye.
Cross-section of wrist showing tendons and nerves involved in carpal tunnel syndrome.
Cross-sectional data showing that the amount of effort spent on personal health care increases with
A William Jennings Bryan poster alludes to religion: “no crown of thorns” and no “cross of gold.” Br
A radiator may be either a down-flow or a cross-flow type.