The advantages of the 4-chambered heart include:

Compare the depth of field when focusing with low power and high power. which power has the greater depth of field?

Were you able to observe the nucleolus in any of the cells if so which ones

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