Where does the spinal cord arise from the medulla oblongata?

Abnormal softening of a gland is known as

How would you expect the mrna codons that code for the amino acids that make up hemoglobin to compare between humans

Which of the following is likely not involved in this example of ecological succession? a) the rotting remains of plants add to the fertility of the soil. b)the soil becomes so fertile that eel grass is replaced by other plant species. c) the roots from plants stabilize the sediment, keeping it in place. d) the concentration of salt becomes so high that all plant life is destroyed.