What are the 3 volcano comes?

How many hours a week does a zoo keeper work? What climate zone does the Sahel have? What type of eruptions does mount st Helens do? Do metalloids have a full valence shell of electrons? Where are lines of longitude farthest apart? 10 meters equals 9.4 seconds how many meters will it go in 3 minutes? What will happen if you have no joints? How do you convert newton into Kg? What is the use of the condenser clamp? Which would be made if cells cork sponge wood plastic tree? Who made the discovery of the fact that oxygen and hydrogen combine to make water? What is the process of converting nitrogen into nitrogen compounds? Do chemists design materials to fit general needs? Is hydrobromic acid a compound element or a homogeneous mixture? What was proven wrong about the structure of niels bohr atom? How do lichen grow? How long does the average pear tree live? What is the time difference between Georgia and Niger? Which cell organelle is most sensitive indicator of cell injury? What is a rock that contains a metal or economically?