What type of structure is a root?

Is it safe to be in the room with the dehumidifier? What is the color and the luminosity of 51 pegasi? What does psm mean? Is glucose a cation or anion? What is meant by diversity and why diversity should be valued? Is neuron a single celled organism? How does the building of jetties negatively effect coastlines? It is a mixture that has the same composition throughout? Is the spectacular eruption of gas from the surface of the sun called a sunspot? Is oxygen required for the stage in respiration that takes place in the cytoplasm? What organelle synthesizes lysosomes? Which most precisely identifies the production of energy for life's activities? Why can't a green algae survive without mitochondria? What is true about oxygen 17 and 18? What are the most efficient biomolecules for storing energy would it be fats nucleic acids carbohydrates or proteins? What is the function of DNA pre wash buffer? What are the chemical properties of sand? What part of the body does the brain tell to move your legs in order to pedal? Is magnesium hazardous? How can a hormone that is present in very small quantities within the bloodstream elicit such a large response within a cell?