plants seeds & bulbs
hubbard scientific r er environmental ecology seed kit
learners observe the effects of three doses of gamma irradiation on seeds and compare with control seeds the effects of ionizing radiation can be seen within 48 hours and the experiment can be completed within 2 weeks kit contains enough material for 30 students working individually comprehensive teacher s guide and reproducible student worksheets american educational products have a lead ship time of 21 days sku amed1549