Is neem tree annual or perennial?

What state in the United States spans four time zones? What is the purpose for controlled prairie fires? Is weather concrete or abstract? What part of the flower waits pollen? How many millimeters are there in 0.45 liters? What unit of measurement do you use to find temperature? Do low pressure areas lead to thunderstorms? What country is the Sistine Chapel Ceiling in? What is a neurotransmitter that has been extensively studied? What type of measurement is this 45 apples? When atoms of the reactants unbond rearrange and then rebond to form the products what type of reaction is this chemical or physical? Why does the lead iodide not pass through the filter paper? What is the effect of HCl on the pH if water? Mendel used more than 28000 pea plants in his experiment. How does this large sample size make his results more reliable? Which human activity is correctly paired with the greenhouse gas that it increases? What are low pressure belts found at the equator? How can a particle itself be it's antiparticle? How do tardigrades find food? What are depressions on the moon called? Are the north and south pole connected?