What is rank vegetation?

Is salt in sweat is an example of mechanical barrier that the body uses for protection? How is Jupiter's moon Ganymede similar to Earth's moon? Plant spores are produced directly by? Can you turn off an appliance at the breaker box to protect against lightning? What problems can the brain experience? What if their are 18 protons in an atom how many electrons are their? What structuere has blood with a high carbon dioxide content? How many moles of O2 are needed to burn 1.35mol of C8H18? What animals do Sahara Desert nomads raise? Which animal is born from a hard shelled egg? How many active volcanos? What is allegiant air? What ion initiates muscle contraction? Name two things the circulatory system does to keep the body healthy? What carries cardiac impulses to the myocardium? In anemia 23-DPG is and oxygen affinity is? Why does water have to absorb six times as much heat to have the same temperature of sand? What is the family name for the elements that fit between groups 2a and 3b? What are the common compounds of Neptunium? Does the sciatic nerve run down the left and right leg?