3. Are the leaves of Betula populifolia hairy or smooth on the lower surface?

Ectocarpene is a volatile, sperm cell-attracting material released by the eggs of the seaweed ectocarpus siliculosus. its constitution is all the double bonds are cis, and the absolute configuration of the chirality center is s. draw a stereochemically accurate representation of ectocarpene.

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With the word calcite wich completes the analogy mineral, erosion, marble, or aragonite