Answer:
Although the nervous system is very complex, there are only two main types of cells in nerve tissue. The actual nerve cell is the neuron. It is the "conducting" cell that transmits impulses and the structural unit of the nervous system. The other type of cell is neuroglia, or glial, cell.
Answer:
The answer is C - studying one chimpanzee for several days.
Explanation:
Answer:
The oxygen revolution happened about 2.5 billion years ago. ... Then oxygen started to accumulate in the atmosphere. Oxygen is toxic to anaerobic organisms and this increase in atmospheric oxygen killed much of the life that had evolved to this point generating a huge mass extinction.
Explanation:
Jenny underwent a prenatal test or procedure known as <span>Amniocentesis<span>. The<span> small amount of amniotic fluid (less than one ounce) removed from the sac surrounding the </span></span>fetus<span> is then sent to the laboratory for analysis. Prior to amniocentesis, a complete anatomical ultrasound should be done to patient. </span></span>
