What are the hazards associated with using a UV lamp

1.Compare and contrast fluorescence and phosphorescence. Make sure to include experimental differences as well as theoretical differences.2.What are the hazards associated with using a UV lamp?3.Three compounds are separated using a polar silica plate and methanol. The Rf values for compounds A B and C are A = 0.7 B = 0.3 and C = 0.8. Identify the stationary phase and the mobile phase and rank the compounds from least polar to most polar and explain.4.When performing the TLC for this lab you are asked to place a piece of filter paper into the solvent. Why?5.What are the hazards associated with boiling methanol?6.Using this spectra explain why many plant leaves (which contain chlorophyll) appear green. (The picture is attached.)