Explain why plants grown in low nitrate soils than plants grown in normal nitrate soils

Fredrick griffith made a scientific discovery in 1928

Adistinctive characteristic of mammals that is not observed in other vertebrates is

Can happen anywhere along the spine if the neural tube does not close all the way. the backbone that protects the spinal cord does not form and close as it should. this often results in damage to the spinal cord and nerves. a) cleft palate b) spina bifida c) encephalocele d) down's syndrome