What are the 5 examples of organs?

In the year 1950 what was the distance of earth to the sun and is it exactly the same in the year 2009? If you performed a melting point on the same compound in san francisco and on top of mt Everest would the results differ? What is a Constructive Change in contracting? What are unicellular eukaryote-? How many acres do minefields take up? What waste excretion problem is shared by invertebrates and vertebrates? Why can you apply the term molecule to the smallest particle of water but not to that of table salt? What is the name of the starting cell that divides into 2 identical cells in mitosis? What are the different stages of body decomposition after death? What a possible formula for the empirical formula of C3H5ClO? How the wind flows? How do ''indicators'' work? Does 3 cups equal 1 liter? How do you use gravitational force in a sentence? If 213j raises a sample of water 8.2C what is the mass of the water? Watson and Crick elucidated the structure of DNA in 1953 Their research built on and helped explain the findings of other scientists including? Does a Meadow or City Park have more biodiversity? Where can calcium get nutrients from? What forms V-shaped channels like the Grand Canyons? Where is a fossil located?