Complete Aquaponics system using recycled water carboys, top half container is used as filtration and plant growbed, two connected containers hold almost 10 gallons of water, Both can hold fish. No direct plumbing connec
Health and Harmony Excellent Kit, Includes: Conductivity of Water Tester, Wave/Spine/Arm/Brain/Head Model, Created for middle school ages, Well-rounded curriculum that incorporates stem content, For use across Physics, Chemistry, Biology and Mathematics
SONOtrain* Ultrasound Foreign Body Model-Spare Block, P121 / 1019651 with 6 different, clearly detectable and recognizable foreign body inserts: pellets, shards of glass, nail, projectile, chippings, splinters of wood
Biology Educational Materials
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