Did dinosaurs exist at the same time as humans?

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.

The negative change found inside the plasma membrane is created by potassium ions sodium ions hydrogen ions chlorine ions

Suppose you were the commissioner of corrections for your state. which correctional activities might come within your domain? which mostly would not