The local fire department sounds the 12 o'clock whistle. the process by which your ears transform the sound waves from the siren into neural impulses is an example of interposition. parallel processing. transduction. sensory interaction.

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

i hope this