Holt Science & Technology, Chapter 5: Resource File, Heredity: Life Science

Guooreat MX65E1 Loudspeaker 6.5 Inch Midrange 400 Watts 6 Ohms Red Bullet, Premium Quality Audio Door Speakers for Car or Truck Stereo Sound System, Black (2 Speakers)

Car Speakers, Pack of 2 400W High Powered Car Loudspeakers Midrange System External Magnetic Type Coaxial 4 in Car Loudspeakers Replacement for Car Truck Traveling Driving, Black

mobiator Midrange Loudspeakers MB-M404 400W Max, 4 Ohms High Efficiency Car Audio Door Speakers for Car or Truck Stereo Sound System-Black (2 Speakers) (MB-M404)

AudioControl EPICPRO6X Epic PRO Series 6.5" Midrange Car Audio Speakers, 200 Watt RMS/300 Watt Max, 4 Ohm, High SPL, Street Loud, Phase Cap, Door Speakers (Pair)

mobiator Midrange Loudspeakers MB-M654 600W Max, 4 Ohms High Efficiency Car Audio Door Speakers for Car or Truck Stereo Sound System-Black (2 Speakers) (MB-M654)

Deaf Bonce Pair Apocalypse 8" 600W Peak 4 Ohm Midrange Speakers AP-M81AC

KICKER 47KSC2704 2.75" Mid-Range Speakers, 4ohm with Brackets for Select GM/Chrysler/Subaru/Jeep and Toyota Included

ORION XTR XTX654 High Efficiency 6.5" Mid-Range Bullet Loudspeakers, 1400W Max Power, 350W RMS, 4 Ohm, 1.5" Voice Coil - Pro Car Audio Stereo, Midrange Speakers (Pair)