What are the disadvantages of a science investigatory project?

What is hyponychium? What are three things do all systems have? What term indicates the inability to distinguish between colors such and red and green? Why can a supported hypothesis not be called a theory? How have microscopes helped scientists? What are 2 uses of a light bulb? What would be the best thing to do if you run an experiment and find out the hypothesis is incorrect? What are the steps of how tissues help your hand move when you touch a hot stove? What does that mean that water in plastic bottles leeches? Is air the same as carbon doixed? What is the volume of 100 kg of lead? How many miles is 320k? Many elements found in nature exist as? If grass turns brown as it dries is it a physical or chemical change? If paper is shredded into confetti is that a physical or chemical change? What does is2g mean? What is the best science experiment in the world? What probability is based on repeated trials of an experiment? If you only had a candle for heat which would keep you warmer in the cold an igloo or a wooden house? What is 42.4 degrees Celsius in Fahrenheit?